Buddhist Holy Day is four holy days on the new moon, full moon, and quarter moon days every month. What are Thai Buddhists doing on this day? They will offer food, fruits, and some dried food with flowers to monks in the morning.
Some of them will go to meditation or listen to sermons and make merit. Today is the holy day if you wake up in the early morning you will notice that there are Thai Buddhists offering some foods and sweets with flowers along the street which is the beautiful scenery in Bangkok.