The day on Foursquare starts at 5am
For some strange reason, the day on Foursquare starts at 5am. This seems to apply only to Malaysia-based users.
It could be the Foursquare servers for Malaysia are in Ukraine and their clocks are based on the +3GMT timezone.
So I could check in at 4am and it would still be counted as the previous day. But I check in just one hour later at 5am and that would count as a new and separate checkin.
This information could be important to stealing mayorships.