Reduced weekly rest

If you have say 84 hours off on the Mayday weekend then that can be 45 for the week ending 06/05 and 39 for the week starting 07/05 if that is of any use to you as it means you could take as little as 24 off (counted for no week) on the weekend of the 13/05 followed by a 45+ off for the weekend of the 20/05