HM the Queen Sirikit's birthday celebrations will officially run from August 12 to August 15, according to the government.
Finance Minister Korn Chatikavanij said the celebrations would be held under the "Power of Love…from the Mother of the Land" theme, and activities in her honour would be held at the Amporn Garden and the Royal Plaza from 6pm to midnight on the three days.
The activities include a multimedia exhibition featuring Their Majesties the King and the Queen, demonstrations about Thai culture and local wisdom, a dancing fountain, fireworks, fashion shows and a photo-and-floral exhibition.
Check www.facebook.com/ilovemomnews or @lovemom_news on Twitter for more details. People are encouraged to post photographs depicting their most memorable moments with their mothers on these websites.
"Owners of the most-viewed pictures will receive special prizes," he said.
The top prize is a gold picture of Their Majesties the King and the Queen, worth Bt19,990.
Korn is also encouraging people to help locate the people who have appeared in 12 memorable snapshots alongside Her Majesty.
Culture Ministry permanent secretary Vira Rojpochanarat said activities in honour of Her Majesty would also be arranged at the National Theatre and the National Museum.
"People can also sign their best wishes to Her Majesty at the ministry's website," he said.