Probably the greatest danger to tourists on Koh Phangan is posed by the vast amounts of alcohol and other stimulants during the monthly full-moon parties on Haad Rin, which have become one of the biggest attractions on the so-called 'backpacker trail' through South East Asia.
Devotees take approximately 48 days to prepare for the festival, which takes place mid-January to mid-February, when the moon is full in the 10th Tamil month of the Thai calendar.
The Waxing Gibbous Moon - the lunar phase between first quarter Moon and a full Moon - will be approximately one degree south of Jupiter appearing to be only a pen width apart.