Naim Bhai Help Page

The lottery is drawn on the first and the sixteenth of every month.

https://play.google.com/store/apps/details?id=com.sanook.lottothai&pcampaignid=web_share
Thailand's official national lottery is administered by The Government Lottery Office. It is one of only two forms of legalised gambling permitted in Thailand, the other being horse racing in Bangkok.