You better set your time in Thailand or be fined up to 500 000 THB. The Thai government is making sure we all stand up and hear the national anthem at the same time and is setting the time the 23 August.
All public places like shops, internet cafes and government agencies have to apply. I do not really think the police going to come and kick in your door if you not set your house clock. But bar owners should make sure the girls set the time correctly on the 23 of August so that the police do not have any excuse to get some extra money.
The public will be able to listen in to FM radio stations for official time announcements, at 8am and 6pm.