acalculator

Days until July 18

July 18 falls on a Saturday in 2026 and a Sunday in 2027. The count runs from today’s date on your device to the next July 18; pick another date to count from it instead.

Your numbers

Days until July 18
291

From September 30, 2026, there are 291 days until July 18 on Sunday, July 18, 2027.

Date
Sunday, July 18, 2027
Day of the week
Sunday
In weeks
41 weeks and 4 days

Answer for the example date Wednesday, September 30, 2026. It changes to today's date when the page loads.

Days until July 18: 291. From September 30, 2026, there are 291 days until July 18 on Sunday, July 18, 2027.

Where is July 18 on the calendar?

How to calculate

Counts the days from today, or any date you choose, to the next July 18, with its day of the week.

Example with the default inputs (Count from September 30, 2026) on the example date Wednesday, September 30, 2026: From September 30, 2026, there are 291 days until July 18 on Sunday, July 18, 2027.

Method: Find the first July 18 on or after the start date, then count the days from the start date to it.

  • July 18 comes every year, so the count is never more than 365 days.
  • The start date itself is not counted: from the day before July 18, the count is 1; on July 18 itself, it is 0.
  • Start dates from January 1, 1900 to December 31, 2400 work for the count to July 18, the range the date field accepts.
  • Today is the date on your own device, so the count to July 18 changes at midnight where you are. Dates are whole calendar days, so a daylight-saving change never adds or loses a day.

Machine-readable copies: Markdown, JSON.

Worked examples

Each example is checked against the calculator on every build.

  1. Count from 2027-07-18 gives Date 2027-07-18, Days until July 18 0.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  2. Count from 2027-01-01 gives Date 2027-07-18, Days until July 18 198.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)
  3. Count from 2027-07-19 gives Date 2028-07-18, Days until July 18 365.Source: U.S. Naval Observatory, Leap Years: the Gregorian leap year rule (https://aa.usno.navy.mil/faq/leap_years)

Other questions people ask

What day of the week is July 18?

Saturday, July 18, 2026; Sunday, July 18, 2027; Tuesday, July 18, 2028. The weekday of July 18 moves on one day a year, or two when a February 29 falls between.

What day of the year is July 18?

July 18 is day 199 of a common year and day 200 of a leap year, such as 2028. Either way, 166 days of the year come after it.

What season is July 18 in?

In the Northern Hemisphere, July 18 is in summer in every year from 2026 to 2035; in the Southern Hemisphere, it is winter. Seasons here start on the astronomical equinoxes and solstices, dated in US Eastern Time.

Is July 18 a US federal holiday?

No. No US federal holiday falls on July 18. The next one in the calendar after July 18 is Labor Day, which falls between September 1 and September 7.

How are the days until July 18 counted?

From the start date to July 18, without counting the start date: from July 17 the count is 1, and on July 18 it is 0. The day after, it moves on to the next July 18: from July 19, 2026, that is July 18, 2027, 364 days away.