| 1/1/1820, Sat | New Year's Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 1/3/1820, Mon | New Year's Day: Additional Observance Day |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 3/26/1820, Sun | Palm Sunday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 3/31/1820, Fri | Good Friday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/1/1820, Sat | Holy Saturday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/2/1820, Sun | Easter |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 4/3/1820, Mon | Easter Monday |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 5/1/1820, Mon | Belfast City Marathon |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Foot Race. Same day as Early May Bank Holiday
|
| 5/1/1820, Mon | Early May Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 5/29/1820, Mon | Spring Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 6/10/1820, Sat | Queen's Birthday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 7/12/1820, Wed | Orangeman's Day & Parade |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 8/28/1820, Mon | Summer Bank Holiday |
- Religion
- –
- Disrespectful to Hold an Event
- –
|
| 10/31/1820, Tue | Halloween |
- Religion
- –
- Disrespectful to Hold an Event
- –
- Note
- Annual fireworks display
|
| 12/24/1820, Sun | Christmas Eve |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/25/1820, Mon | Christmas Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/26/1820, Tue | Boxing Day |
- Religion
- Christian
- Disrespectful to Hold an Event
- –
|
| 12/31/1820, Sun | New Year's Eve |
- Religion
- –
- Disrespectful to Hold an Event
- –
|