How Many Days Until St Patrick's Day 2026?

St Patrick's Day 2026 is Tuesday, 17 March 2026

St Patrick's Day 2026 fell on Tuesday, 17 March 2026, which was 155 days before 19 August 2026. That is 22 weeks and 1 day, or 108 working days once Saturdays, Sundays and the US federal holidays in between are taken out — the figure that matters if you are counting delivery lead time or a work schedule rather than sleeps. The date is 2026-03-17 in ISO form and 3/17/2026 in the US format, it falls in ISO week 12 of 2026, and it is day 76 of 365.

How the date of St Patrick's Day is decided

St Patrick's Day is always 17 March. It is a public holiday in Ireland, where it moves to the following Monday when it falls on a weekend, but not in the United States.

That makes it a fixed date: the same day of the same month every year, so it lands on a different weekday each time. In 2026 it is a Tuesday.

St Patrick's Day is an observance rather than a federal holiday. Offices, banks and schools stay open unless an individual employer chooses otherwise, and it counts as an ordinary business day in every calculator here. Only the eleven federal holidays are treated as non-working days — the list and the reasoning are on the holiday sources page.

St Patrick's Day in the years after 2026

The date does not move, but the weekday does — which is why the same holiday gives a long weekend in some years and not others.

Every convention used above — whether the start date counts, how month ends are clamped, which holidays close an office — is written out on the methodology page, including how we count the 108 working days above.