What day of the week is May 15, 2026?

Friday

May 15, 2026

144 days ago

Calendar position

Fridayday of the week
135day of the year
W20ISO week
Q2quarter
Weekdaytype of day
144days ago
Waning Crescentmoon phase
Commonyear type

The answer in detail

Friday, May 15, 2026 falls on a Friday. It is day 135 of 365 in 2026, in ISO week 20, in quarter 2 and in spring in the northern hemisphere. The date is 144 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.

The moon and the calendar

On May 15, 2026 the moon is a Waning Crescent with about 2% of its disc lit, roughly 28 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.

How weekday lookups work

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.

Frequently asked questions

What day of the week is May 15, 2026?

It is a Friday.

What day of the year is May 15, 2026?

Day 135 of 365.

What ISO week is it?

Week 20 of 2026.

Which quarter is it in?

Quarter 2 of 2026.

Is it a weekend?

No, it is a weekday (Friday).

Is 2026 a leap year?

No.

How far away is the date?

144 days ago.

What is the moon phase on that date?

Waning Crescent, about 2% illuminated.

RESULT & PLANNING

Use this calculation

What Day of the Week Is May 15, 2026?: Friday May 15, 2026 — 144 days ago

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.

Working days and weekends

144Calendar days
102Weekdays
21Saturdays
21Sundays
Not included unless this calculator says otherwisePublic holidays

Practical planning milestones

  1. Calculated dateFriday, May 15, 2026

Accuracy and limitations

  • The result uses the calendar rules and time zone shown on this page.
  • Leap years and actual month lengths are handled by the calendar arithmetic where they affect the calculation.

Save or share this result

Calculation history

Machine-readable result
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