| 1/1/1931, Thu | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
|
| 1/20/1931, Tue | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 2/5/1931, Thu | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 2/17/1931, Tue | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
|
| 2/19/1931, Thu | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
|
| 2/21/1931, Sat | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
|
| 2/23/1931, Mon | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 2/23/1931, Mon | Hari Raya Aidil Fitri (Day 2): Actual Observance Day |
- Note
- A statutory public holiday.
|
| 4/28/1931, Tue | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
|
| 5/19/1931, Tue | Islamic New Year |
- Note
- A statutory public holiday.
|
| 6/1/1931, Mon | Royal Brunei Armed Forces Day: Actual Observance Day |
- Note
- A statutory public holiday.
|
| 7/15/1931, Wed | H.M. The Sultan's Birthday |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
|
| 7/28/1931, Tue | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 12/8/1931, Tue | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
|
| 12/28/1931, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
|