what's the latest Post Office collection time in NYC?

Subject: what's the latest Post Office collection time in NYC?

I know that the automatic mail box at Cadman Plaza is collected at 6pm on weekdays. Is there anywhere in the city where I could drop off mail later and still have it postmarked today?

I've taken stuff to the main post office in Manhattan at 33rd and 7th and if you take it to the window, they are open 24hrs, they will stamp it then and there

i know the post ffice on third ave and 53rd has a 7pm cut off for postmarks