Well, it all depends on what the American phrase "valid now through Monday, November 29th only" means. Does that mean it expires at midnight of November 28th / 29th, or at midnight of November 29th / 30th ? And which midnight, as in midnight in which time zone (GMT, EST, Mountain, Pacific, ...) ?
I just wish people would think about what they're trying to say in a world with global commerce,
Ro