... and they will let you enter the lounge as long as your flight is on the same day (and sometimes even if you arrive the evening before)
Cases in point (don't ask me why this happened ...):
1) I arrived at lounge entrance at 00.30am for a 1430pm flight
2) I arrived at lounge entrance at 20.00pm for a flight at 3 am.
In both cases I was admitted to the lounge without any problems.