I've noticed that dawn and sunset (the change from "hours of darkness" to "hours of daylight") creeps minute by minute to earlier time on what I call the survival clock - the information on days, hours and minutes survived on the stats screen. Perhaps by a minute in 10-20 days. This indicates that the "astronomical" day in the game is slightly shorter than the one measured by the survival clock.
I've noticed that dawn and sunset (the change from "hours of darkness" to "hours of daylight") creeps minute by minute to earlier time on what I call the survival clock - the information on days, hours and minutes survived on the stats screen. Perhaps by a minute in 10-20 days. This indicates that the "astronomical" day in the game is slightly shorter than the one measured by the survival clock.