| 1/1/1966, Sat | New Year's Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 1/3/1966, Mon | New Year's Day: Additional Observance Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 4/3/1966, Sun | Palm Sunday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/8/1966, Fri | Good Friday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/9/1966, Sat | Holy Saturday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/10/1966, Sun | Easter |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/11/1966, Mon | Easter Monday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 5/2/1966, Mon | Belfast City Marathon |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Foot Race. Same day as Early May Bank Holiday
|
| 5/2/1966, Mon | Early May Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 5/30/1966, Mon | Spring Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 6/11/1966, Sat | Queen's Birthday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 7/12/1966, Tue | Orangeman's Day & Parade |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 8/29/1966, Mon | Summer Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 10/31/1966, Mon | Halloween |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Annual fireworks display
|
| 12/24/1966, Sat | Christmas Eve |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/25/1966, Sun | Christmas Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/26/1966, Mon | Boxing Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/27/1966, Tue | Christmas Day: Additional Observance Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/31/1966, Sat | New Year's Eve |
- Religion
- –
- Disrespectful to Hold an Event
- –
|