diff --git a/src/openrct2-ui/windows/LoadSave.cpp b/src/openrct2-ui/windows/LoadSave.cpp
index 3495993861..271137e484 100644
--- a/src/openrct2-ui/windows/LoadSave.cpp
+++ b/src/openrct2-ui/windows/LoadSave.cpp
@@ -30,6 +30,7 @@
 #include <openrct2/interface/Widget.h>
 #include <openrct2/localisation/Localisation.h>
 #include <openrct2/platform/platform.h>
+#include <openrct2/platform/Platform2.h>
 #include <openrct2/util/Util.h>
 
 #pragma region Widgets
@@ -128,8 +129,8 @@ typedef struct loadsave_list_item {
     char name[256];
     char path[MAX_PATH];
     time_t date_modified;
-    char date_formatted[20];
-    char time_formatted[20];
+    std::string date_formatted;
+    std::string time_formatted;
     uint8 type;
     bool loaded;
 } loadsave_list_item;
@@ -524,13 +525,13 @@ static void window_loadsave_compute_max_date_width()
     tm.tm_yday = 294;
     tm.tm_isdst = -1;
 
-    char date[20];
-    std::strftime(date, sizeof(date), "%x", &tm);
-    maxDateWidth = gfx_get_string_width(date);
+    std::time_t long_time = mktime(&tm);
 
-    char time[20];
-    std::strftime(time, sizeof(time), "%X", &tm);
-    maxTimeWidth = gfx_get_string_width(time);
+    std::string date = Platform::FormatShortDate(long_time);
+    maxDateWidth = gfx_get_string_width(date.c_str());
+
+    std::string time = Platform::FormatTime(long_time);
+    maxTimeWidth = gfx_get_string_width(time.c_str());
 }
 
 static void window_loadsave_invalidate(rct_window *w)
@@ -644,10 +645,10 @@ static void window_loadsave_scrollpaint(rct_window *w, rct_drawpixelinfo *dpi, s
             sint32 offset = w->widgets[WIDX_SORT_DATE].left + maxDateWidth;
 
             set_format_arg(0, rct_string_id, STR_STRING);
-            set_format_arg(2, char*, _listItems[i].date_formatted);
+            set_format_arg(2, char*, _listItems[i].date_formatted.c_str());
             gfx_draw_string_right_clipped(dpi, stringId, gCommonFormatArgs, COLOUR_BLACK, offset - 2, y, maxDateWidth);
 
-            set_format_arg(2, char*, _listItems[i].time_formatted);
+            set_format_arg(2, char*, _listItems[i].time_formatted.c_str());
             gfx_draw_string_left_clipped(dpi, stringId, gCommonFormatArgs, COLOUR_BLACK, offset + 2, y, maxTimeWidth);
         }
     }
@@ -810,8 +811,8 @@ static void window_loadsave_populate_list(rct_window *w, sint32 includeNewItem,
                 listItem->date_modified = platform_file_get_modified_time(listItem->path);
 
                 // Cache a human-readable version of the modified date.
-                std::strftime(listItem->date_formatted, sizeof(listItem->date_formatted), "%x", std::localtime(&listItem->date_modified));
-                std::strftime(listItem->time_formatted, sizeof(listItem->time_formatted), "%X", std::localtime(&listItem->date_modified));
+                listItem->date_formatted = Platform::FormatShortDate(listItem->date_modified);
+                listItem->time_formatted = Platform::FormatTime(listItem->date_modified);
 
                 // Mark if file is the currently loaded game
                 listItem->loaded = strcmp(listItem->path, gCurrentLoadedPath) == 0;
diff --git a/src/openrct2/platform/Platform.Posix.cpp b/src/openrct2/platform/Platform.Posix.cpp
index 15f5f5faae..caa4a65839 100644
--- a/src/openrct2/platform/Platform.Posix.cpp
+++ b/src/openrct2/platform/Platform.Posix.cpp
@@ -19,6 +19,7 @@
 #include <cstring>
 #include <pwd.h>
 #include <cstdlib>
+#include <ctime>
 #include "../core/String.hpp"
 #include "Platform2.h"
 #include "platform.h"
@@ -82,6 +83,20 @@ namespace Platform
         platform_get_openrct_data_path(path, sizeof(path));
         return path;
     }
+
+    std::string FormatShortDate(std::time_t timestamp)
+    {
+        char date[20];
+        std::strftime(date, sizeof(date), "%x", std::gmtime(&timestamp));
+        return std::string(date);
+    }
+
+    std::string FormatTime(std::time_t timestamp)
+    {
+        char time[20];
+        std::strftime(time, sizeof(time), "%X", std::gmtime(&timestamp));
+        return std::string(time);
+    }
 }
 
 #endif
diff --git a/src/openrct2/platform/Platform.Win32.cpp b/src/openrct2/platform/Platform.Win32.cpp
index 3b94c7f818..589b2b68c4 100644
--- a/src/openrct2/platform/Platform.Win32.cpp
+++ b/src/openrct2/platform/Platform.Win32.cpp
@@ -18,6 +18,7 @@
 
 #define WIN32_LEAN_AND_MEAN
 #include <windows.h>
+#include <datetimeapi.h>
 #include <shlobj.h>
 #undef GetEnvironmentVariable
 
@@ -144,6 +145,37 @@ namespace Platform
         platform_get_openrct_data_path(path, sizeof(path));
         return path;
     }
+
+    SYSTEMTIME * TimeToSystemTime(std::time_t timestamp)
+    {
+        LONGLONG ll = Int32x32To64(timestamp, 10000000) + 116444736000000000;
+
+        FILETIME ft;
+        ft.dwLowDateTime = (DWORD) ll;
+        ft.dwHighDateTime = ll >> 32;
+
+        SYSTEMTIME st;
+        FileTimeToSystemTime(&ft, &st);
+        return &st;
+    }
+
+    std::string FormatShortDate(std::time_t timestamp)
+    {
+        SYSTEMTIME * st = TimeToSystemTime(timestamp);
+
+        wchar_t date[20];
+        GetDateFormatEx(LOCALE_NAME_USER_DEFAULT, DATE_SHORTDATE, st, nullptr, &date, sizeof(date), nullptr);
+        return String::ToUtf8(std::wstring(date));
+    }
+
+    std::string FormatTime(std::time_t timestamp)
+    {
+        SYSTEMTIME * st = TimeToSystemTime(timestamp);
+
+        wchar_t time[20];
+        GetTimeFormatEx(LOCALE_NAME_USER_DEFAULT, 0, st, nullptr, &time, sizeof(time));
+        return String::ToUtf8(std::wstring(time));
+    }
 }
 
 #endif
diff --git a/src/openrct2/platform/Platform2.h b/src/openrct2/platform/Platform2.h
index 16f5eb9575..9ae79139e1 100644
--- a/src/openrct2/platform/Platform2.h
+++ b/src/openrct2/platform/Platform2.h
@@ -18,6 +18,7 @@
 
 #ifdef __cplusplus
 
+#include <ctime>
 #include <string>
 #include "../common.h"
 
@@ -40,6 +41,9 @@ namespace Platform
     std::string GetEnvironmentPath(const char * name);
     std::string GetHomePath();
 #endif
+
+    std::string FormatShortDate(std::time_t timestamp);
+    std::string FormatTime(std::time_t timestamp);
 }
 
 #endif