diff --git a/src/crashlog.cpp b/src/crashlog.cpp
index be56ef6e9d..d3dd93734e 100644
--- a/src/crashlog.cpp
+++ b/src/crashlog.cpp
@@ -575,7 +575,7 @@ char *CrashLog::FillCrashLog(char *buffer, const char *last)
 		buffer += UTCTime::Format(buffer, last, "Crash at: %Y-%m-%d %H:%M:%S (UTC)\n");
 
 		buffer += seprintf(buffer, last, "In game date: %i-%02i-%02i (%i, %i) (DL: %u)\n", EconTime::CurYear().base(), EconTime::CurMonth() + 1, EconTime::CurDay(), EconTime::CurDateFract(), TickSkipCounter(), DayLengthFactor());
-		buffer += seprintf(buffer, last, "Calendar date: %i-%02i-%02i (%i, %i)\n", CalTime::CurYear().base(), CalTime::CurMonth() + 1, CalTime::CurDay(), CalTime::CurDateFract(), CalTime::Detail::now.sub_date_fract);
+		buffer += seprintf(buffer, last, "Calendar date: %i-%02i-%02i (%i, %i)\n", CalTime::CurYear().base(), CalTime::CurMonth() + 1, CalTime::CurDay(), CalTime::CurDateFract(), CalTime::CurSubDateFract());
 		LogGameLoadDateTimes(buffer, last);
 		return buffer;
 	});
@@ -675,7 +675,7 @@ static char *LogDesyncDateHeader(char *buffer, const char *last)
 
 	buffer += seprintf(buffer, last, "In game date: %i-%02i-%02i (%i, %i) (DL: %u), %08X\n",
 			EconTime::CurYear().base(), EconTime::CurMonth() + 1, EconTime::CurDay(), EconTime::CurDateFract(), TickSkipCounter(), DayLengthFactor(), _frame_counter);
-	buffer += seprintf(buffer, last, "Calendar date: %i-%02i-%02i (%i, %i)\n", CalTime::CurYear().base(), CalTime::CurMonth() + 1, CalTime::CurDay(), CalTime::CurDateFract(), CalTime::Detail::now.sub_date_fract);
+	buffer += seprintf(buffer, last, "Calendar date: %i-%02i-%02i (%i, %i)\n", CalTime::CurYear().base(), CalTime::CurMonth() + 1, CalTime::CurDay(), CalTime::CurDateFract(), CalTime::CurSubDateFract());
 	LogGameLoadDateTimes(buffer, last);
 	if (_networking && !_network_server) {
 		extern EconTime::Date _last_sync_date;
diff --git a/src/date_type.h b/src/date_type.h
index 5b06864a26..8b4fd55f4c 100644
--- a/src/date_type.h
+++ b/src/date_type.h
@@ -186,6 +186,7 @@ struct CalTime : public DateDetail::BaseTime<struct CalendarTimeTag> {
 	static inline Day                 CurDay()             { return Detail::now.cal_ymd.day; }
 	static inline Date                CurDate()            { return Detail::now.cal_date; }
 	static inline DateFract           CurDateFract()       { return Detail::now.cal_date_fract; }
+	static inline uint16_t            CurSubDateFract()    { return Detail::now.sub_date_fract; }
 
 	static YearMonthDay ConvertDateToYMD(Date date);
 	static Date ConvertYMDToDate(Year year, Month month, Day day);
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
index cc99996d0d..9c7e88ba2b 100644
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -1568,7 +1568,7 @@ void CallVehicleTicks()
 
 	if (TickSkipCounter() == 0) RunVehicleDayProc();
 
-	if (EconTime::UsingWallclockUnits() && !CalTime::IsCalendarFrozen() && CalTime::Detail::now.sub_date_fract == 0) {
+	if (EconTime::UsingWallclockUnits() && !CalTime::IsCalendarFrozen() && CalTime::CurSubDateFract() == 0) {
 		RunVehicleCalendarDayProc();
 	}