On the Black Bay Pro, the reference time is indicated by an angular yellow “Snowflake” hand, an aesthetic hallmark of TUDOR, which completes a lap of the dial every 24 hours. Local time is indicated by another, shorter “Snowflake” hand set by a jumping hour, which can be moved either backwards or forwards.
The date, displayed through an aperture positioned at 3 o’clock, is coupled with the local time hand so that when setting the time and passing midnight in retrograde, it instantly jumps to the previous day. A highly unusual, sophisticated and particularly practical function for the user.