diff --git a/apps/openmw/CMakeLists.txt b/apps/openmw/CMakeLists.txt
index a6bd85b1d7..a6b68df86d 100644
--- a/apps/openmw/CMakeLists.txt
+++ b/apps/openmw/CMakeLists.txt
@@ -67,7 +67,7 @@ add_openmw_dir (mwworld
     actionequip timestamp actionalchemy cellstore actionapply actioneat
     store esmstore recordcmp fallback actionrepair actionsoulgem livecellref actiondoor
     contentloader esmloader actiontrap cellreflist cellref physicssystem weather projectilemanager
-    cellpreloader
+    cellpreloader datetimemanager
     )
 
 add_openmw_dir (mwphysics
diff --git a/apps/openmw/mwbase/world.hpp b/apps/openmw/mwbase/world.hpp
index 6bf4cbaaeb..627e2f2b72 100644
--- a/apps/openmw/mwbase/world.hpp
+++ b/apps/openmw/mwbase/world.hpp
@@ -48,6 +48,7 @@ namespace ESM
     struct EffectList;
     struct CreatureLevList;
     struct ItemLevList;
+    struct TimeStamp;
 }
 
 namespace MWRender
@@ -204,24 +205,14 @@ namespace MWBase
             virtual void advanceTime (double hours, bool incremental = false) = 0;
             ///< Advance in-game time.
 
-            virtual void setHour (double hour) = 0;
-            ///< Set in-game time hour.
-
-            virtual void setMonth (int month) = 0;
-            ///< Set in-game time month.
-
-            virtual void setDay (int day) = 0;
-            ///< Set in-game time day.
-
-            virtual int getDay() const = 0;
-            virtual int getMonth() const = 0;
-            virtual int getYear() const = 0;
-
             virtual std::string getMonthName (int month = -1) const = 0;
             ///< Return name of month (-1: current month)
 
             virtual MWWorld::TimeStamp getTimeStamp() const = 0;
-            ///< Return current in-game time stamp.
+            ///< Return current in-game time and number of day since new game start.
+
+            virtual ESM::EpochTimeStamp getEpochTimeStamp() const = 0;
+            ///< Return current in-game date and time.
 
             virtual bool toggleSky() = 0;
             ///< \return Resulting mode
diff --git a/apps/openmw/mwgui/waitdialog.cpp b/apps/openmw/mwgui/waitdialog.cpp
index 64f9122986..18cc187c15 100644
--- a/apps/openmw/mwgui/waitdialog.cpp
+++ b/apps/openmw/mwgui/waitdialog.cpp
@@ -150,11 +150,10 @@ namespace MWGui
         if (hour >= 13) hour -= 12;
         if (hour == 0) hour = 12;
 
-        std::string dateTimeText =
-                MyGUI::utility::toString(MWBase::Environment::get().getWorld ()->getDay ()) + " "
-                + month + " (#{sDay} " + MyGUI::utility::toString(MWBase::Environment::get().getWorld ()->getTimeStamp ().getDay())
-                + ") " + MyGUI::utility::toString(hour) + " " + (pm ? "#{sSaveMenuHelp05}" : "#{sSaveMenuHelp04}");
-
+        ESM::EpochTimeStamp currentDate = MWBase::Environment::get().getWorld()->getEpochTimeStamp();
+        int daysPassed = MWBase::Environment::get().getWorld()->getTimeStamp().getDay();
+        std::string formattedHour = pm ? "#{sSaveMenuHelp05}" : "#{sSaveMenuHelp04}";
+        std::string dateTimeText = Misc::StringUtils::format("%i %s (#{sDay} %i) %i %s", currentDate.mDay, month, daysPassed, hour, formattedHour);
         mDateTimeText->setCaptionWithReplacing (dateTimeText);
     }
 
diff --git a/apps/openmw/mwstate/statemanagerimp.cpp b/apps/openmw/mwstate/statemanagerimp.cpp
index db83f72c16..9974b8f160 100644
--- a/apps/openmw/mwstate/statemanagerimp.cpp
+++ b/apps/openmw/mwstate/statemanagerimp.cpp
@@ -213,11 +213,7 @@ void MWState::StateManager::saveGame (const std::string& description, const Slot
             profile.mPlayerClassId = classId;
 
         profile.mPlayerCell = world.getCellName();
-
-        profile.mInGameTime.mGameHour = world.getTimeStamp().getHour();
-        profile.mInGameTime.mDay = world.getDay();
-        profile.mInGameTime.mMonth = world.getMonth();
-        profile.mInGameTime.mYear = world.getYear();
+        profile.mInGameTime = world.getEpochTimeStamp();
         profile.mTimePlayed = mTimePlayed;
         profile.mDescription = description;
 
diff --git a/apps/openmw/mwworld/datetimemanager.cpp b/apps/openmw/mwworld/datetimemanager.cpp
new file mode 100644
index 0000000000..0894c974d3
--- /dev/null
+++ b/apps/openmw/mwworld/datetimemanager.cpp
@@ -0,0 +1,227 @@
+#include "datetimemanager.hpp"
+
+#include "../mwbase/environment.hpp"
+#include "../mwbase/world.hpp"
+
+#include "esmstore.hpp"
+#include "globals.hpp"
+#include "timestamp.hpp"
+
+namespace
+{
+    static int getDaysPerMonth(int month)
+    {
+        switch (month)
+        {
+            case 0: return 31;
+            case 1: return 28;
+            case 2: return 31;
+            case 3: return 30;
+            case 4: return 31;
+            case 5: return 30;
+            case 6: return 31;
+            case 7: return 31;
+            case 8: return 30;
+            case 9: return 31;
+            case 10: return 30;
+            case 11: return 31;
+        }
+
+        throw std::runtime_error ("month out of range");
+    }
+}
+
+namespace MWWorld
+{
+    void DateTimeManager::setup(Globals& globalVariables)
+    {
+        mGameHour = globalVariables["gamehour"].getFloat();
+        mDaysPassed = globalVariables["dayspassed"].getInteger();
+        mDay = globalVariables["day"].getInteger();
+        mMonth = globalVariables["month"].getInteger();
+        mYear = globalVariables["year"].getInteger();
+        mTimeScale = globalVariables["timescale"].getFloat();
+    }
+
+    void DateTimeManager::setHour(double hour)
+    {
+        if (hour < 0)
+            hour = 0;
+
+        int days = static_cast<int>(hour / 24);
+        hour = std::fmod(hour, 24);
+        mGameHour = static_cast<float>(hour);
+
+        if (days > 0)
+            setDay(days + mDay);
+    }
+
+    void DateTimeManager::setDay(int day)
+    {
+        if (day < 1)
+            day = 1;
+
+        int month = mMonth;
+        while (true)
+        {
+            int days = getDaysPerMonth(month);
+            if (day <= days)
+                break;
+
+            if (month < 11)
+            {
+                ++month;
+            }
+            else
+            {
+                month = 0;
+                mYear++;
+            }
+
+            day -= days;
+        }
+
+        mDay = day;
+        mMonth = month;
+    }
+
+    TimeStamp DateTimeManager::getTimeStamp() const
+    {
+        return TimeStamp(mGameHour, mDaysPassed);
+    }
+
+    float DateTimeManager::getTimeScaleFactor() const
+    {
+        return mTimeScale;
+    }
+
+    ESM::EpochTimeStamp DateTimeManager::getEpochTimeStamp() const
+    {
+        ESM::EpochTimeStamp timeStamp;
+        timeStamp.mGameHour = mGameHour;
+        timeStamp.mDay = mDay;
+        timeStamp.mMonth = mMonth;
+        timeStamp.mYear = mYear;
+        return timeStamp;
+    }
+
+    void DateTimeManager::setMonth(int month)
+    {
+        if (month < 0)
+            month = 0;
+
+        int years = month / 12;
+        month = month % 12;
+
+        int days = getDaysPerMonth(month);
+        if (mDay > days)
+            mDay = days;
+
+        mMonth = month;
+
+        if (years > 0)
+            mYear += years;
+    }
+
+    void DateTimeManager::advanceTime(double hours, Globals& globalVariables)
+    {
+        hours += mGameHour;
+        setHour(hours);
+
+        int days = static_cast<int>(hours / 24);
+        if (days > 0)
+            mDaysPassed += days;
+
+        globalVariables["gamehour"].setFloat(mGameHour);
+        globalVariables["dayspassed"].setInteger(mDaysPassed);
+        globalVariables["day"].setInteger(mDay);
+        globalVariables["month"].setInteger(mMonth);
+        globalVariables["year"].setInteger(mYear);
+    }
+
+    std::string DateTimeManager::getMonthName(int month) const
+    {
+        if (month == -1)
+            month = mMonth;
+
+        const int months = 12;
+        if (month < 0 || month >= months)
+            return std::string();
+
+        static const char *monthNames[months] =
+        {
+            "sMonthMorningstar", "sMonthSunsdawn", "sMonthFirstseed", "sMonthRainshand",
+            "sMonthSecondseed", "sMonthMidyear", "sMonthSunsheight", "sMonthLastseed",
+            "sMonthHeartfire", "sMonthFrostfall", "sMonthSunsdusk", "sMonthEveningstar"
+        };
+
+        const ESM::GameSetting *setting = MWBase::Environment::get().getWorld()->getStore().get<ESM::GameSetting>().find(monthNames[month]);
+        return setting->mValue.getString();
+    }
+
+    bool DateTimeManager::updateGlobalFloat(const std::string& name, float value)
+    {
+        if (name=="gamehour")
+        {
+            setHour(value);
+            return true;
+        }
+        else if (name=="day")
+        {
+            setDay(static_cast<int>(value));
+            return true;
+        }
+        else if (name=="month")
+        {
+            setMonth(static_cast<int>(value));
+            return true;
+        }
+        else if (name=="year")
+        {
+            mYear = static_cast<int>(value);
+        }
+        else if (name=="timescale")
+        {
+            mTimeScale = value;
+        }
+        else if (name=="dayspassed")
+        {
+            mDaysPassed = static_cast<int>(value);
+        }
+
+        return false;
+    }
+
+    bool DateTimeManager::updateGlobalInt(const std::string& name, int value)
+    {
+        if (name=="gamehour")
+        {
+            setHour(static_cast<float>(value));
+            return true;
+        }
+        else if (name=="day")
+        {
+            setDay(value);
+            return true;
+        }
+        else if (name=="month")
+        {
+            setMonth(value);
+            return true;
+        }
+        else if (name=="year")
+        {
+            mYear = value;
+        }
+        else if (name=="timescale")
+        {
+            mTimeScale = static_cast<float>(value);
+        }
+        else if (name=="dayspassed")
+        {
+            mDaysPassed = value;
+        }
+
+        return false;
+    }
+}
diff --git a/apps/openmw/mwworld/datetimemanager.hpp b/apps/openmw/mwworld/datetimemanager.hpp
new file mode 100644
index 0000000000..b460be746a
--- /dev/null
+++ b/apps/openmw/mwworld/datetimemanager.hpp
@@ -0,0 +1,43 @@
+#ifndef GAME_MWWORLD_DATETIMEMANAGER_H
+#define GAME_MWWORLD_DATETIMEMANAGER_H
+
+#include <string>
+
+namespace ESM
+{
+    struct EpochTimeStamp;
+}
+
+namespace MWWorld
+{
+    class Globals;
+    class TimeStamp;
+
+    class DateTimeManager
+    {
+        int mDaysPassed = 0;
+        int mDay = 0;
+        int mMonth = 0;
+        int mYear = 0;
+        float mGameHour = 0.f;
+        float mTimeScale = 0.f;
+
+        void setHour(double hour);
+        void setDay(int day);
+        void setMonth(int month);
+
+    public:
+        std::string getMonthName(int month) const;
+        TimeStamp getTimeStamp() const;
+        ESM::EpochTimeStamp getEpochTimeStamp() const;
+        float getTimeScaleFactor() const;
+
+        void advanceTime(double hours, Globals& globalVariables);
+
+        void setup(Globals& globalVariables);
+        bool updateGlobalInt(const std::string& name, int value);
+        bool updateGlobalFloat(const std::string& name, float value);
+    };
+}
+
+#endif
diff --git a/apps/openmw/mwworld/globals.cpp b/apps/openmw/mwworld/globals.cpp
index 69ec5563bc..8a481334e8 100644
--- a/apps/openmw/mwworld/globals.cpp
+++ b/apps/openmw/mwworld/globals.cpp
@@ -2,10 +2,9 @@
 
 #include <stdexcept>
 
-#include <components/misc/stringops.hpp>
-
 #include <components/esm/esmwriter.hpp>
 #include <components/esm/esmreader.hpp>
+#include <components/misc/stringops.hpp>
 
 #include "esmstore.hpp"
 
diff --git a/apps/openmw/mwworld/worldimp.cpp b/apps/openmw/mwworld/worldimp.cpp
index aee98e7ea9..c51266bab6 100644
--- a/apps/openmw/mwworld/worldimp.cpp
+++ b/apps/openmw/mwworld/worldimp.cpp
@@ -60,6 +60,7 @@
 #include "../mwphysics/object.hpp"
 #include "../mwphysics/constants.hpp"
 
+#include "datetimemanager.hpp"
 #include "player.hpp"
 #include "manualref.hpp"
 #include "cellstore.hpp"
@@ -121,33 +122,11 @@ namespace MWWorld
           LoadersContainer mLoaders;
     };
 
-    int World::getDaysPerMonth (int month) const
-    {
-        switch (month)
-        {
-            case 0: return 31;
-            case 1: return 28;
-            case 2: return 31;
-            case 3: return 30;
-            case 4: return 31;
-            case 5: return 30;
-            case 6: return 31;
-            case 7: return 31;
-            case 8: return 30;
-            case 9: return 31;
-            case 10: return 30;
-            case 11: return 31;
-        }
-
-        throw std::runtime_error ("month out of range");
-    }
-
     void World::adjustSky()
     {
         if (mSky && (isCellExterior() || isCellQuasiExterior()))
         {
-            mRendering->skySetDate (mDay->getInteger(), mMonth->getInteger());
-
+            updateSkyDate();
             mRendering->setSkyEnabled(true);
         }
         else
@@ -193,6 +172,8 @@ namespace MWWorld
         if (mEsm[0].getFormat() == 0)
             ensureNeededRecords();
 
+        mCurrentDate.reset(new DateTimeManager());
+
         fillGlobalVariables();
 
         mStore.setUp(true);
@@ -227,13 +208,7 @@ namespace MWWorld
     void World::fillGlobalVariables()
     {
         mGlobalVariables.fill (mStore);
-
-        mGameHour = &mGlobalVariables["gamehour"];
-        mDaysPassed = &mGlobalVariables["dayspassed"];
-        mDay = &mGlobalVariables["day"];
-        mMonth = &mGlobalVariables["month"];
-        mYear = &mGlobalVariables["year"];
-        mTimeScale = &mGlobalVariables["timescale"];
+        mCurrentDate->setup(mGlobalVariables);
     }
 
     void World::startNewGame (bool bypass)
@@ -310,6 +285,7 @@ namespace MWWorld
             mPhysics->toggleCollisionMode();
 
         MWBase::Environment::get().getWindowManager()->updatePlayer();
+        mCurrentDate->setup(mGlobalVariables);
     }
 
     void World::clear()
@@ -639,26 +615,20 @@ namespace MWWorld
 
     void World::setGlobalInt (const std::string& name, int value)
     {
-        if (name=="gamehour")
-            setHour (value);
-        else if (name=="day")
-            setDay (value);
-        else if (name=="month")
-            setMonth (value);
-        else
-            mGlobalVariables[name].setInteger (value);
+        bool dateUpdated = mCurrentDate->updateGlobalInt(name, value);
+        if (dateUpdated)
+            updateSkyDate();
+
+        mGlobalVariables[name].setInteger (value);
     }
 
     void World::setGlobalFloat (const std::string& name, float value)
     {
-        if (name=="gamehour")
-            setHour (value);
-        else if (name=="day")
-            setDay(static_cast<int>(value));
-        else if (name=="month")
-            setMonth(static_cast<int>(value));
-        else
-            mGlobalVariables[name].setFloat (value);
+        bool dateUpdated = mCurrentDate->updateGlobalFloat(name, value);
+        if (dateUpdated)
+            updateSkyDate();
+
+        mGlobalVariables[name].setFloat(value);
     }
 
     int World::getGlobalInt (const std::string& name) const
@@ -676,6 +646,11 @@ namespace MWWorld
         return mGlobalVariables.getType (name);
     }
 
+    std::string World::getMonthName (int month) const
+    {
+        return mCurrentDate->getMonthName(month);
+    }
+
     std::string World::getCellName (const MWWorld::CellStore *cell) const
     {
         if (!cell)
@@ -894,130 +869,29 @@ namespace MWWorld
         }
 
         mWeatherManager->advanceTime (hours, incremental);
+        mCurrentDate->advanceTime(hours, mGlobalVariables);
+        updateSkyDate();
 
         if (!incremental)
         {
             mRendering->notifyWorldSpaceChanged();
             mProjectileManager->clear();
         }
-
-        hours += mGameHour->getFloat();
-
-        setHour (hours);
-
-        int days = static_cast<int>(hours / 24);
-
-        if (days>0)
-            mDaysPassed->setInteger (
-                days + mDaysPassed->getInteger());
     }
 
-    void World::setHour (double hour)
+    float World::getTimeScaleFactor() const
     {
-        if (hour<0)
-            hour = 0;
-
-        int days = static_cast<int>(hour / 24);
-
-        hour = std::fmod (hour, 24);
-
-        mGameHour->setFloat(static_cast<float>(hour));
-
-        if (days>0)
-            setDay (days + mDay->getInteger());
-    }
-
-    void World::setDay (int day)
-    {
-        if (day<1)
-            day = 1;
-
-        int month = mMonth->getInteger();
-
-        while (true)
-        {
-            int days = getDaysPerMonth (month);
-            if (day<=days)
-                break;
-
-            if (month<11)
-            {
-                ++month;
-            }
-            else
-            {
-                month = 0;
-                mYear->setInteger(mYear->getInteger()+1);
-            }
-
-            day -= days;
-        }
-
-        mDay->setInteger(day);
-        mMonth->setInteger(month);
-
-        mRendering->skySetDate(day, month);
-    }
-
-    void World::setMonth (int month)
-    {
-        if (month<0)
-            month = 0;
-
-        int years = month / 12;
-        month = month % 12;
-
-        int days = getDaysPerMonth (month);
-
-        if (mDay->getInteger()>days)
-            mDay->setInteger (days);
-
-        mMonth->setInteger (month);
-
-        if (years>0)
-            mYear->setInteger (years+mYear->getInteger());
-
-        mRendering->skySetDate (mDay->getInteger(), month);
-    }
-
-    int World::getDay() const
-    {
-        return mDay->getInteger();
-    }
-
-    int World::getMonth() const
-    {
-        return mMonth->getInteger();
-    }
-
-    int World::getYear() const
-    {
-        return mYear->getInteger();
-    }
-
-    std::string World::getMonthName (int month) const
-    {
-        if (month==-1)
-            month = getMonth();
-
-        const int months = 12;
-
-        if (month<0 || month>=months)
-            return "";
-
-        static const char *monthNames[months] =
-        {
-            "sMonthMorningstar", "sMonthSunsdawn", "sMonthFirstseed", "sMonthRainshand",
-            "sMonthSecondseed", "sMonthMidyear", "sMonthSunsheight", "sMonthLastseed",
-            "sMonthHeartfire", "sMonthFrostfall", "sMonthSunsdusk", "sMonthEveningstar"
-        };
-
-        return mStore.get<ESM::GameSetting>().find (monthNames[month])->mValue.getString();
+        return mCurrentDate->getTimeScaleFactor();
     }
 
     TimeStamp World::getTimeStamp() const
     {
-        return TimeStamp (mGameHour->getFloat(), mDaysPassed->getInteger());
+        return mCurrentDate->getTimeStamp();
+    }
+
+    ESM::EpochTimeStamp World::getEpochTimeStamp() const
+    {
+        return mCurrentDate->getEpochTimeStamp();
     }
 
     bool World::toggleSky()
@@ -1042,11 +916,6 @@ namespace MWWorld
         mRendering->skySetMoonColour (red);
     }
 
-    float World::getTimeScaleFactor() const
-    {
-        return mTimeScale->getFloat();
-    }
-
     void World::changeToInteriorCell (const std::string& cellName, const ESM::Position& position, bool adjustPlayerPos, bool changeEvent)
     {
         mPhysics->clearQueuedMovement();
@@ -1089,6 +958,8 @@ namespace MWWorld
             changeToExteriorCell (position, adjustPlayerPos, changeEvent);
         else
             changeToInteriorCell (cellId.mWorldspace, position, adjustPlayerPos, changeEvent);
+
+        mCurrentDate->setup(mGlobalVariables);
     }
 
     void World::markCellAsUnchanged()
@@ -3968,4 +3839,10 @@ namespace MWWorld
         mNavigator->reportStats(frameNumber, stats);
         mPhysics->reportStats(frameNumber, stats);
     }
+
+    void World::updateSkyDate()
+    {
+        ESM::EpochTimeStamp currentDate = mCurrentDate->getEpochTimeStamp();
+        mRendering->skySetDate(currentDate.mDay, currentDate.mMonth);
+    }
 }
diff --git a/apps/openmw/mwworld/worldimp.hpp b/apps/openmw/mwworld/worldimp.hpp
index fa2f7778ba..aeb6bbae40 100644
--- a/apps/openmw/mwworld/worldimp.hpp
+++ b/apps/openmw/mwworld/worldimp.hpp
@@ -69,6 +69,7 @@ namespace MWPhysics
 
 namespace MWWorld
 {
+    class DateTimeManager;
     class WeatherManager;
     class Player;
     class ProjectileManager;
@@ -85,13 +86,6 @@ namespace MWWorld
             LocalScripts mLocalScripts;
             MWWorld::Globals mGlobalVariables;
 
-            ESM::Variant* mGameHour;
-            ESM::Variant* mDaysPassed;
-            ESM::Variant* mDay;
-            ESM::Variant* mMonth;
-            ESM::Variant* mYear;
-            ESM::Variant* mTimeScale;
-
             Cells mCells;
 
             std::string mCurrentWorldSpace;
@@ -102,6 +96,7 @@ namespace MWWorld
             std::unique_ptr<MWRender::RenderingManager> mRendering;
             std::unique_ptr<MWWorld::Scene> mWorldScene;
             std::unique_ptr<MWWorld::WeatherManager> mWeatherManager;
+            std::unique_ptr<MWWorld::DateTimeManager> mCurrentDate;
             std::shared_ptr<ProjectileManager> mProjectileManager;
 
             bool mSky;
@@ -139,7 +134,6 @@ namespace MWWorld
             World& operator= (const World&);
 
             void updateWeather(float duration, bool paused = false);
-            int getDaysPerMonth (int month) const;
 
             void rotateObjectImp (const Ptr& ptr, const osg::Vec3f& rot, MWBase::RotationFlags flags);
 
@@ -173,6 +167,8 @@ namespace MWWorld
 
             void fillGlobalVariables();
 
+            void updateSkyDate();
+
             /**
              * @brief loadContentFiles - Loads content files (esm,esp,omwgame,omwaddon)
              * @param fileCollections- Container which holds content file names and their paths
@@ -318,24 +314,14 @@ namespace MWWorld
             void advanceTime (double hours, bool incremental = false) override;
             ///< Advance in-game time.
 
-            void setHour (double hour) override;
-            ///< Set in-game time hour.
-
-            void setMonth (int month) override;
-            ///< Set in-game time month.
-
-            void setDay (int day) override;
-            ///< Set in-game time day.
-
-            int getDay() const override;
-            int getMonth() const override;
-            int getYear() const override;
-
             std::string getMonthName (int month = -1) const override;
             ///< Return name of month (-1: current month)
 
             TimeStamp getTimeStamp() const override;
-            ///< Return current in-game time stamp.
+            ///< Return current in-game time and number of day since new game start.
+
+            ESM::EpochTimeStamp getEpochTimeStamp() const override;
+            ///< Return current in-game date and time.
 
             bool toggleSky() override;
             ///< \return Resulting mode
diff --git a/components/esm/defs.hpp b/components/esm/defs.hpp
index 0f0478faab..6c0c33526e 100644
--- a/components/esm/defs.hpp
+++ b/components/esm/defs.hpp
@@ -14,6 +14,14 @@ struct TimeStamp
     int mDay;
 };
 
+struct EpochTimeStamp
+{
+    float mGameHour;
+    int mDay;
+    int mMonth;
+    int mYear;
+};
+
 // Pixel color value. Standard four-byte rr,gg,bb,aa format.
 typedef uint32_t Color;
 
diff --git a/components/esm/savedgame.cpp b/components/esm/savedgame.cpp
index cda4113140..b5bf6e4066 100644
--- a/components/esm/savedgame.cpp
+++ b/components/esm/savedgame.cpp
@@ -2,7 +2,6 @@
 
 #include "esmreader.hpp"
 #include "esmwriter.hpp"
-#include "defs.hpp"
 
 unsigned int ESM::SavedGame::sRecordId = ESM::REC_SAVE;
 int ESM::SavedGame::sCurrentFormat = 10;
diff --git a/components/esm/savedgame.hpp b/components/esm/savedgame.hpp
index aa0429657b..26efae824e 100644
--- a/components/esm/savedgame.hpp
+++ b/components/esm/savedgame.hpp
@@ -4,6 +4,8 @@
 #include <vector>
 #include <string>
 
+#include "defs.hpp"
+
 namespace ESM
 {
     class ESMReader;
@@ -17,14 +19,6 @@ namespace ESM
 
         static int sCurrentFormat;
 
-        struct TimeStamp
-        {
-            float mGameHour;
-            int mDay;
-            int mMonth;
-            int mYear;
-        };
-
         std::vector<std::string> mContentFiles;
         std::string mPlayerName;
         int mPlayerLevel;
@@ -36,7 +30,7 @@ namespace ESM
         std::string mPlayerClassName;
 
         std::string mPlayerCell;
-        TimeStamp mInGameTime;
+        EpochTimeStamp mInGameTime;
         double mTimePlayed;
         std::string mDescription;
         std::vector<char> mScreenshot; // raw jpg-encoded data