Assuming an on-time launch at 12:34 PM EDT today (Wed, Apr 7), the Starlink L23 group will make a nice visible pass over D.C. and the mid-Atlantic on its 6th orbit tonight at 8:30 PM EDT. Here's the sky chart for D.C.
Will pass very close to the Pleiades, Aldebaran, Beetlejuice, above Orion's belt and the bright star Sirius. Mars is a nondescript orange dot above Aldebaran right now.
Max elevation 44 deg for D.C., higher for points south and lower toward the north but still quite good up to Philly. The group of sats should still be very compact at this point, and at only 260 km alt. I haven't seen a group this soon after launch so not sure how bright it will be, but this is the best time to look. Should appear as a short string of pearls with all 60 sats maybe 10s apart. Should have individual orbits by sunset for a better estimate of the spread. Sky will be nice and dark by 8:30, with no moon. Worth a look even if partly cloudy.