Public holidays
Public holidays in 2019
| Tuesday 1 January | New Year |
| Friday 19 April | Bank holiday |
| Monday 22 April | Easter Monday |
| Wednesday 1 May | Labor Day |
| Thursday 30 May | Ascension Day |
| Friday 31 May | Friday after Ascension Day (Bank Holiday) |
| Monday 10 June | Whit Monday |
| Sunday 21 July | National Holiday |
| Thursday 15 August | Assumption of Mary |
| Friday 1 November | All Saints' Day |
| Monday 11 November | Armistice |
| Wednesday 25 December | Christmas |
| Thursday 26 December | Bank holiday |
Public holidays in 2020
| Wednesday 1 January | New Year |
| Friday 10 January | Counters close at 1 p.m. |
| Friday 10 April | Good Friday (Bank Holiday) |
| Sunday 12 April | Easter |
| Monday 13 April | Easter Monday |
| Friday 1 May | Labor Day |
| Thursday 21 May | Ascension Day |
| Friday 22 May | Friday after Ascension Day (Bank Holiday) |
| Sunday 31 May | Whitsun |
| Monday 1 June | Whit Monday |
| Tuesday 21 July | National Holiday |
| Saturday 15 August | Assumption of Mary |
| Sunday 1 November | All Saints' Day |
| Wednesday 11 November | Armistice |
| Friday 25 December | Christmas |
Specific closing days
Some NBB services or applications follow a specific calendar:
- NBB-SSS, TARGET2 and T2S
- Central Individual Credit Register
- Applications Sofista, Filing and Consult