Ledra Street border crossing - Open 24/7?

Can anyone tell me if the passport/border offices are open 24/7 or are they closed at any point of the night?

The reason I'm asking is that I might have to cross from the south to the north to get an early morning Kibhas bus to Ercan airport.

TIA.

Any ideas from you ex-pats living in Nicosia, please ....

It should be Dimps. I have crossed at all hours of the day.