240hrs to 0700hrs = 4hrs and 20mins remaining

4hrs x 60mins = 240mins

240mins + 20mins = 260mins

260mins divided by 5(the number of people, could be 5,4,3,2) = 52mins each.

Rounded to 50mins i get the last one to 1hr.

1) 240hrs - 0330hrs, 2) 330hrs - 420hrs, 3) 420hrs - 510hrs, 4) 0510hrs - 0600hrs, 5) 0600hrs - 0700hrs (THE LAST ONE IS 1 HR WHY IS THIS?)