Board Thread:Support Requests - Getting Started/@comment-14943570-20131220221411/@comment-303594-20140105090638

2Actimv wrote: However you can change the time you see in Special:Preferences for yourself. That's not really helpful in that case. The badge tracks a day's edits from 0000 - 0000 UTC, regardless of your personal preference in timezones.

CDT is UTC -5 and CST is UTC -6