Nigeria Working Days Calculator
Count Nigerian working days with all national public holidays excluded — including both Eid al-Fitr days and Eid al-Adha at approximate lunar dates, for project timelines and delivery windows across Nigeria.
Count working days in Nigeria between any two dates — all national public holidays excluded.
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Covers Nigeria's national public holidays. Good Friday and Easter Monday are computed for any year. Islamic holidays (Eid al-Fitr, Eid al-Adha) are approximate dates from annual override tables — verify with official government sources for exact dates.
Formula
Working Days = Weekdays − National public holidays falling on weekdays
Count all Monday–Friday days in the range, then subtract Nigerian national public holidays that fall on those weekdays. Eid al-Fitr and Eid al-Adha dates are approximate — they are confirmed by moon sighting and may differ by one day from the dates shown.
Worked Example
Scenario: A Lagos supplier quotes a 10 working day lead time starting Monday 28 April 2025.
Workers' Day (1 May, Thursday) falls within the first week — one weekday holiday.
10 working days + 1 Workers' Day = 11 weekdays forward
Result: deadline falls on 13 May 2025
Note that Democracy Day (29 May) is also close to this window. If the timeline extended to late May, one additional working day would be lost.
Common Mistakes
- Using fixed dates for Eid holidays. Both Eid al-Fitr and Eid al-Adha follow the Islamic lunar calendar. Their Gregorian dates shift by approximately 10–11 days each year. The Nigerian government confirms dates officially following moon sighting — the actual date can differ by one day from astronomical calculations. For precision planning around late March, early June, or any Eid period, always check the official Nigerian government announcement.
- Missing the two-day Eid al-Fitr block. Nigeria observes two consecutive statutory public holidays for Eid al-Fitr (end of Ramadan) — Day 1 and Day 2. Teams from countries that observe only one Eid day will undercount by one working day for any timeline spanning this period.
- Confusing Democracy Day. Nigeria's Democracy Day was moved from 27 May to 29 May in 2019, aligning it with the date President Olusegun Obasanjo was sworn in as Nigeria's first civilian president in 1999 after military rule. Any calculator or database using the pre-2019 date of 27 May will be incorrect for all years from 2019 onwards.
Guide
How to Use
- 1
Enter start and end dates
Select the period you want to measure. Both dates are inclusive in the count.
- 2
Click Calculate
The tool counts Monday–Friday days and deducts Nigeria's national public holidays.
- 3
Review excluded holidays
The result shows working days and names any public holidays excluded within the range, including approximate Eid dates.
- 4
Verify Eid dates officially
For deadlines near Eid al-Fitr (late March) or Eid al-Adha (early June), confirm the exact dates from the Nigerian government official announcement, as lunar sighting can shift the date by one day.
FAQ
Frequently Asked Questions
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