Can't rem when was the last time I left office in daylight before today...

Left office at 7pm today. Was still daylight when I left.
Got abit of shock. Started to recall when was the last time I left in daylight. No clue.... Issit because

1) I had been staying late at work everyday?
2) The day had suddenly turned longer?

If its (2), its good. Finally no more darkness from 5pm. but if its (1) , its no good. and I think its more of (1). Sigh....................