HM Queen Sirikit The Queen Mother's Birthday (in lieu) is a public holiday in Thailand, known locally as ชดเชยวันเฉลิมพระชนมพรรษาสมเด็จพระบรมราชชนนีพันปีหลวง.
Dates, 2025 to 2028
| Year | Date | Weekday | Note |
|---|---|---|---|
| 2025 | not a holiday this year | ||
| 2026 | not a holiday this year | ||
| 2027 | not a holiday this year | ||
| 2028 | 14 August | Monday long weekend | |