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 bottles and cigarettes. Every month many partygoers cut and/or burn their feet and legs at the Full Moon Party, which is preventable with appropriate footwear. On New Year's Eve 2012, British tourist Stephen Ashton was killed by a stray bullet. On New Year's Eve 2016, The crowd was showered in firework embers at midnight causing minor burns and stampede of panicked party goers. The Full Moon Party has been featured in films such as "The Beach", "Last Stop for Paul", and the Thai film "Hormones". It was also featured in the first episode of the Comedy Central TV show Gerhard