Saturdays they are open from 9am until 2pm except today and next saturday they have extended hours and close at 5pm.
Saturday9AM–2PMSundayClosedMonday9AM–5:30PMTuesday9AM–5:30PMWednesday9AM–5:30PMThursday9AM–5:30PMFriday9AM–5:30PM
I think they are open till 1 or 2. Google which post office you want to go to it'll tell you the hours
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