After I took the picture below I walked to the man shown in the distance. He asked why all the bars were closed, I told him it was a Buddhist holiday. I’d been tipped off that all the bars would close so I went to take some photos of the darkened bar district.
The holiday falls on the full moon of the 8th Thai lunar month.
It commemorates the Buddha’s first discourse after he reached Enlightenment, called the Dhammacakkappavattana Sutta. The holiday has several names: Asalha Puja, the beginning of Vassa, Dhamma Day or Dharma Day.