Heavy Water Board (Central Office),
Mumbai will observe the following holidays during the year 2026
| Sr. No. | Festival/Occasion | Date | Day of Week |
|---|---|---|---|
| 1. | Republic Day | 26.01.2026 | Monday |
| 2. | Holi | 03.03.2026 | Tuesday |
| 3 | Gudi padva | 19.03.2026 | Thursday |
| 4 | Id-ul-Fitr (Ramzan Id) | 21.03.2026* | Saturday |
| 5 | Mahavir Jayanti | 31.03.2026 | Tuesday |
| 6. | Good Friday | 03.04.2026 | Friday |
| 7. | Buddha Purnima | 01.05.2026 | Friday |
| 8. | Id-ul-Zuha (Bakrid) | 27.05.2026* | Wednesday |
| 9. | Muharram | 26.06.2026* | Friday |
| 10. | Independence Day | 15.08.2026 | Saturday |
| 11. | Id-E—Milad (Birthday of Prophet Mohammad) | 26.08.2026* | Wednesday |
| 12. | Ganesh Chaturthi | 14.09.2026 | Monday |
| 13. | Mahatma Gandhi's Birthday | 02.10.2026 | Friday |
| 14. | Dussehra | 20.10.2026 | Tuesday |
| 15. | Diwali (Deepavali) | 08.11.2026 | Sunday |
| 16. | Guru Nanak’s Birthday | 24.11.2026 | Tuesday |
| 17. | Christmas Day | 25.12.2026 | Friday |
*Based on holiday declared by Central Government and would be change as per decision of Government of Maharashtra State.