Lunitidal interval. The mean lunitidal intervals (mean high water intervals) are calculated using this equation: interval (hours) = M 2 phase (degrees) × M 2 period (hours) / 360 (degrees) Use the values from the table to set the moon/tide mode of your watch. These values should be sufficient information for watches that use the lunitidal.. The Lunitidal interval can only be used to estimate the tides at places where the semi-diurnal component of the tide is dominant and should not be used to estimate tides for any critical purpose. Calculate a new Lunitidal Interval value. Unlock €20 in Cloud Credits on Hetzner Cloud and power up your online journey today!.
Lunitidal intervals measure the difference between moon up -- when it's directly over your longitude -- and the high tide immediately following. Theoretically, these times are the same, but in reality, they're usually slightly different due to the friction on the ocean floor changing the tide in many locations. Thankfully, calculating the.. The lunitidal interval further varies within about +/- 30 minutes according to the lunar phase. The Lunitidal interval can only be used to estimate the tides at places where the semi-diurnal component of the tide is dominant and should not be used to estimate tides for any critical purpose.