Sorry for the long Subject :)
There are certain badges such as Mortarboard, suffrage which are obtained by accomplishing something in a single day. For example, suffrage is obtained by up voting 30 posts a day.
My query is, what time range is covered in a day.
Is it GMT, UTC, or something else?
Or is it based on activities within last 24 hours and given whenever ever the user crosses a particular threshold. For example, I up voted a post now and have done this 29 more times within last 24 hours, hence I will get suffrage badge?