One ingame day is 5 real hours long.
You can see the date and time on your map and also on the calendar. The calendar also shows you the remaining real time until the next sunset and the upcoming days.
The weather changes once per day.
|Real-world Time||In-game Time|
|7 day||33 days, 14 hours, 24 minutes|
|1 day||4 days, 19 hours, 12 minutes|
|5 hours||1 day|
|1 hour||4 hours, 48 minutes|
|12 minutes, 30 seconds||1 hour|
|1 minute||4 minutes, 48 seconds|