There's a glitch when importing game schedules where the time of those games reverts to 12 am once added to your site. The fix should be released later today. I'll post when it's complete.
You can delete the games you imported then re-import once the fix is in place. Note that you do not want to delete games if you've already added scores and/or stats for them. For those, unfortunately, you'll have to manually edit the times.
Update 4/2 2:30pm PST: This has been fixed, thanks for your patience.