In Belize we are on "Central Standard Time" year-round.
The US and Canada have Daylight Saving time in some (not all) locations. Yesterday, Daylight Saving Time 2012 for US and Canada ended.
From now til springtime, the clocks will show the same time for Belize, Chicago, Houston, Winipeg ....... (aka GMT -6).
Not sure what the impact is with Chetumal - can a regular traveler to Chet inform us?