His Majesty the King's Birthday :
Overview
 
Dads in Thailand get treated to a wonderful day every year on the 5th December in Thailand. This day is the birthday of Thailand's extremely loved and revered king, His Royal Highness King Bhumibol Adulyadej, the world's longest serving monarch. The day is a national public holiday, and You can expect to see lots of Thai families taking dad out to dinner and just celebrating family.

So take the opportunity and give your dad a day to remember, perhaps even taking him on a nice ferry trip to one of the nearby islands courtesy of PhuketFerry.com!