I believe those times are for Central time zone.
The U.S. Synchro Nats event schedule (from USFS, not from Peacock):
All times Pacific; subject to change.
Wednesday, February 21
Junior Short Program | 4:50-6:12 p.m.
Thursday, February 22
Senior Elite 12 Short Program | 6:49-7:05 p.m.
Junior Free Skate | 7:25-8:55 p.m.
Friday, February 23
Senior Short Program | 6:25-6:53 p.m.
Senior Elite 12 Free Skate | 7:13-7:29 p.m.
Saturday, February 24
Collegiate Free Skate | 6:51-9:04 p.m.
Senior Free Skate | 9:24-9:58 p.m.
www.usfigureskating.org