If you have not filed your taxes yet, the clock is ticking.

The main Lawrence Post Office, 645 Vt., will close at 5:30 p.m. today. The lobby, however, will be open until 6:15 p.m. and that’s the last time that anything put into the delivery slot will receive an April 15 postmark.

After that, taxes will be considered late.

Members of the Alferd Packer Memorial String Band will celebrate the end of the tax season with a party from 5 p.m. to 8 p.m. in the lobby of the downtown post office.

Lawrence’s Jayhawk Post Office, 1901 W. 31st St., will shut its doors at the normal 5 p.m. closing time.