Is the moon really related to tides?
Each day there are two high tides and two low tides. The time between high and low tide is a little over 6 hours and the entire tidal cycle repeats itself four times each day. The regularity of the tides corresponds to the regular orbit of the moon around the earth and the rotation of the earth as it orbits around the sun. Depending upon the position of the moon relative to the earth and sun, a moon can have different phases. The phases of the moon are also very regular, and have been used for thousands of years to keep track of time using the lunar calendar. In addition to the daily movements of the moon, these monthly lunar cycles can also impact the tides.
