M-F 9:30 pm Sat 4:30 pm
The latest is nine on the weekdays and five weekend s
If you already have a label printed and ready to go you can drop off as late as 9.45pm. If you don't have a label I'd say 9:30 and be cautious that it might not make it out depending on the line.
I'd get there by 9 pm. It will make it out, unless nature causes delays
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