Since the time interval between each high tide is about 12 hours 25 minutes, on a daily basis the high or low tides will occur about 50 minutes later every day (2 times 25 minutes).
(the time interval between each high tide; is; ) (the high or low tides; will occur; T:about 50 minutes later every day)
the time interval between each high tide the high or low tides
is will occur
T:about 50 minutes later every day