Time and tide movements are for use on the Atlantic coasts of America and Europe only.
Along the whole Atlantic Seaboard, the moon controls the tides quite well, ebbing and flowing on a highly predictable and regular schedule. However, on the Pacific Coast, the tides are irregular. The vastness of the Pacific Ocean makes it impossible for the moon to control the whole Pacific Ocean at once as it does in the Atlantic. It is not unusual for the Pacific Coast to have 3 high tides or 3 low tides a day.
A full rotation
of a tide clock, that is from one high tide to the next high tide, will
take 12 hours and 28 minutes. Therefore, if a customer has a time and tide
clock combination, the customer can expect to see the tide hand
approximately 1 hour behind the hour hand at the end of the first 24 hour
rotation. It is a good idea to check this timing before returning a tide
clock as defective.
Even under normal weather conditions, it is
recommended that the tide clock be reset with local tide charts
approximately every 60 days or so. If resetting is done visually,
preference is for during a full moon. Tide sector comes calibrated for the
East Coast of the United States.