Earth tide lunar and the solar tidal maxima and minima (bulges and depressions) add together for the greatest tidal range at particular latitudes. At first- and third-quarter phases of the moon, lunar and solar tides are perpendicular, and the tidal range is at a minimum. The semi-diurnal tides go through one full cycle (a high and low tide) about once every 12 hours and one full cycle of maximum height (a spring and neap tide) about once every 14 days. The development of a systematic theory of Earth tides was started by George H. Darwin in 1879, and was then furthered by
Full Moon Party sunrise beach of Haad Rin town stay open and play music such as psychedelic trance, R&B, drum and bass, house, dance and reggae. The modern event has become a part of the itinerary of many travellers to Southeast Asia. The success of the Full Moon Party prompted the creation of "Half Moon", "Black (sic. New) Moon", Oxa Beach and other parties. The ruling military government in late-2014 banned all but the Full Moon Party, the application of sweeping edicts such as this, a proven method of levering the secondary party organizers and local business people adhoc into garnishing further contributions