Chris: A couple of follow up questions: In http://www.canadiangeographic.ca/Magazine/SO98/alacarte.asp it says that all of Baffin Island observes Eastern Time. I'm pretty sure that Arctic Bay does, and it is situated (barely) west of the 85° line. I think that may be the westernmost settlement on the island. So that leaves a discrepancy between our maps. Do you have any insights on this? We also have discrepancies for Sturgeon Landing (south of Denare Beach) and Paynton (East of Lloydminster) on opposite sides of Saskatchewan. Looking back to my sources, they are not definitive. I presume I should adjust my borders. Cheers, Steve Jones OnTimeZone.com