| 1/4/1909, Mon | New Year's Day: Actual Observance Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 1/23/1909, Sat | Islamic New Year |
- Note
- A statutory public holiday.
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| 1/25/1909, Mon | Chinese New Year: Actual Observance Day |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/23/1909, Tue | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 4/3/1909, Sat | Prophet Muhammad's Birthday |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
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| 5/31/1909, Mon | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 7/15/1909, Thu | H.M. The Sultan's Birthday |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
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| 8/14/1909, Sat | Isra' and Mi'raj |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 9/16/1909, Thu | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
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| 10/2/1909, Sat | Nuzul Al-Quran |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 10/16/1909, Sat | Hari Raya Aidil Fitri (Day 1) |
- Note
- A statutory public holiday.
|
| 10/18/1909, Mon | Hari Raya Aidil Fitri (Day 2): Actual Observance Day |
- Note
- A statutory public holiday.
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| 10/18/1909, Mon | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
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| 12/23/1909, Thu | Hari Raya Aidil Adha: Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/23/1909, Thu | Hari Raya Aidil Adha: Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/25/1909, Sat | Christmas Day |
- Note
- A statutory public holiday.
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