Mother's Day. The Queen's Birthday Honours. The Queen is dated August 12, the Birthday Anniversary of His Royal Highness and is considered a national Mother's Day.
The national mother's day is the birthday of H.R.H. King Phra Borommarachininat August 12 is the day his Royal birth and treated as a national mother's day.
Mother's Day is a national day of His Majesty King Bhumibol Adulyadej's Birthday Their Majesties the King and Queen on August 12, a day like today, it is the King and Natal National Mother's Day.