# Days until May

Counts the days from today, or any date you choose, to May 1, the first day of the next May, with its weekday and the time in weeks and months.

- Page: https://www.acalculator.org/days/days-until-may
- JSON spec: https://www.acalculator.org/days/days-until-may.json
- Version: e2fa0a419591

## Default answer

Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there are 213 days until May on Saturday, May 1, 2027.

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| from | Count from | The date to count from. Today, unless you change it. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| days | Days until May | Whole days from the start date to the next May 1; 0 on May 1 itself. |
| date | Date | The next May 1 on or after the start date. |
| weekday | Day of the week | The weekday of that May 1. |
| weeks | In weeks | The same number of days in weeks and days. |
| months | In months and days | The time to that date in whole months, then days. |

## Method

Find the first May 1 on or after the start date, then count the days from the start date to it.

## Assumptions

- The count is to May 1, the first day of the month. During May, it counts to May 1 of the next year.
- The start date itself is not counted: from the day before, the count is 1; on the day itself, it is 0.
- Dates are calendar days with no time of day, so a time zone or a daylight-saving change never adds or loses a day.
- Start dates from January 1, 1900 to December 31, 2400 work.

## Worked examples

1. from = 2026-09-28 gives date = 2027-05-01, days = 215, weekday = Saturday. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
2. from = 2026-05-01 gives date = 2026-05-01, days = 0, weekday = Friday. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
3. from = 2026-05-02 gives date = 2027-05-01, days = 364, weekday = Saturday. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).
4. from = 2028-02-29 gives date = 2028-05-01, days = 62, weekday = Monday. Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years).

## FAQ

### When does May 2027 start?

May 2027 starts on Saturday, May 1, 2027 and ends on Monday, May 31, 2027.

### How many days are in May?

May always has 31 days, so May 2027 runs from Saturday, May 1, 2027 to Monday, May 31, 2027.

### What day of the week does May 2028 start on?

May 2028 starts on a Monday: Monday, May 1, 2028.

### What if it is already May?

The page counts to the first day of the month. On May 1 the count is 0; from May 2 to May 31 it counts to May 1 of the next year. From Sunday, May 2, 2027, that is Monday, May 1, 2028.

### How are the days until May counted?

From the start date (today, unless you change it) to May 1, without counting the start date: from the last day of the month before, the count is 1. The weeks and months shown are the same span, in whole weeks and in whole months plus days.