How this calculation was worked out
The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.
May 1, 2026 158 days agoWhat day of the week is May 1, 2026?
Calendar position
Friday, May 1, 2026 falls on a Friday. It is day 121 of 365 in 2026, in ISO week 18, in quarter 2 and in spring in the northern hemisphere. The date is 158 days ago, and it is a weekday, so offices and schools are normally open. It does not coincide with any of the major holidays tracked on this site that year. On May 1, 2026 the moon is a Full Moon with about 99% of its disc lit, roughly 14 days after the previous new moon. That figure is computed from lunar phase formulas, not looked up, so it is available for any year in the range. The weekday of a date is found by counting the days from a known reference date and taking the remainder after dividing by seven. The calculator applies that rule to real Gregorian dates, including leap days, which is why it works equally well for a birth date in 1985 and a wedding date in 2032. Use the form above to check any other date, or open the neighbouring dates linked below.The answer in detail
The moon and the calendar
How weekday lookups work
It is a Friday. Day 121 of 365. Week 18 of 2026. Quarter 2 of 2026. No, it is a weekday (Friday). No. 158 days ago. Full Moon, about 99% illuminated.Frequently asked questions
What day of the week is May 1, 2026?
What day of the year is May 1, 2026?
What ISO week is it?
Which quarter is it in?
Is it a weekend?
Is 2026 a leap year?
How far away is the date?
What is the moon phase on that date?
What Day of the Week Is May 1, 2026?: Friday May 1, 2026 — 158 days ago
The result uses the exact inputs on this page and calendar/time arithmetic appropriate to this calculator. The result shown above is the value to use for this calculation.
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