People tend to check in during these times:
Small post office only opens at 9 am
Slowest lines EVER. Seriously. Walk the extra few blocks to the one on 84th Street.
Minimally staffed; Sequester must be in effect
Worst post office. Staff in incredibly rude and the line is always ridiculously long. Everyone who works here hates their job and their life. Go to the post office on 70th instead.
Overheard: "well whats the big deal about eating at 5?"