| 1/1/1966, Sat | New Year's Day |
- Note
- A statutory public holiday (Awal Tahun Masihi).
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| 1/10/1966, Mon | Nuzul Al-Quran: Actual Observance Day |
- Note
- A statutory public holiday commemorating the revelation of the Qur'an.
|
| 1/24/1966, Mon | Chinese New Year: Actual Observance Day |
- Note
- A statutory public holiday (Tahun Baru Cina).
|
| 1/24/1966, Mon | Hari Raya Aidil Fitri (Day 1): Actual Observance Day |
- Note
- A statutory public holiday.
|
| 1/24/1966, Mon | Hari Raya Aidil Fitri (Day 2) |
- Note
- A statutory public holiday.
|
| 1/25/1966, Tue | Hari Raya Aidil Fitri (Day 3) |
- Note
- A statutory public holiday.
|
| 2/23/1966, Wed | National Day of Brunei Darussalam |
- Note
- A statutory public holiday (Hari Kebangsaan).
|
| 4/4/1966, Mon | Hari Raya Aidil Adha: Actual Observance Day |
- Note
- A statutory public holiday.
|
| 4/25/1966, Mon | Islamic New Year: Actual Observance Day |
- Note
- A statutory public holiday.
|
| 5/31/1966, Tue | Royal Brunei Armed Forces Day |
- Note
- A statutory public holiday.
|
| 7/4/1966, Mon | Prophet Muhammad's Birthday: Actual Observance Day |
- Note
- A statutory public holiday (Maulud Nabi Muhammad SAW).
|
| 7/18/1966, 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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| 11/14/1966, Mon | Isra' and Mi'raj: Actual Observance Day |
- Note
- A statutory public holiday commemorating the Prophet Muhammad's night journey and ascension.
|
| 12/14/1966, Wed | First Day of Ramadan |
- Note
- A statutory public holiday (Awal Ramadan).
|
| 12/26/1966, Mon | Christmas Day: Actual Observance Day |
- Note
- A statutory public holiday.
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