| 1/4/1904, Mon | New Year's Day: Actual Observance Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 2/16/1904, Tue | Chinese New Year |
- Note
- A statutory public holiday (Tahun Baru Cina).
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| 2/23/1904, Tue | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
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| 2/27/1904, Sat | Hari Raya Aidil Adha |
- Note
- A statutory public holiday.
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| 3/21/1904, Mon | Islamic New Year: Actual Observance Day |
- Note
- A statutory public holiday.
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| 5/30/1904, Mon | Prophet Muhammad's Birthday: Actual Observance Day |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
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| 5/31/1904, Tue | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
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| 7/18/1904, Mon | H.M. The Sultan's Birthday: Actual Observance Day |
- Note
- A statutory public holiday. H.M. Sultan Haji Hassanal Bolkiah's Birthday (born 15 July 1946).
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| 10/10/1904, Mon | Isra' and Mi'raj: Actual Observance Day |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
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| 11/9/1904, Wed | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
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| 11/28/1904, Mon | Nuzul Al-Quran: Actual Observance Day |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
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| 12/10/1904, Sat | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
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| 12/12/1904, Mon | Hari Raya Aidil Fitri (Day 1): Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/12/1904, Mon | Hari Raya Aidil Fitri (Day 3): Actual Observance Day |
- Note
- A statutory public holiday.
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| 12/26/1904, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
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