Right on time

Can somebody please enlighten me as to why the Blue Jays' home games are always scheduled to start at times like 1:07pm, 4:07pm, etc. I know that start-times are governed by the TV-scheduling gods, but I can't for the life of me work out why the games in Canada are scheduled to start two minutes after those in the US, especially as the games never start at the precise time indicated anyway.

Answers on a postcard to the usual address.