How many days are between New Year's Eve and Martin Luther King Jr. Day?
Count between any two dates
Used in 'days between' mode. Defaults to 90 days out.
Used in 'add or subtract' mode.
- Days
- 18
- Weeks and days
- 2 weeks, 4 days
- Months and days
- 0 months, 18 days
- Business days (Mon–Fri)
Weekdays only; public holidays are not excluded.
- 12
- Weekend days
- 6
- Resulting date
- —
- Day of the week
- Thursday → Monday
Assumptions
- Dates are local calendar dates; times and time zones are ignored.
- Business days are Monday–Friday with no holiday exclusions.
- Adding months keeps the day of month, clamped to the target month's length.
| After | Date | Falls on a |
|---|---|---|
| 7 days | January 7, 2027 | Thursday |
| 14 days | January 14, 2027 | Thursday |
| 21 days | January 21, 2027 | Thursday |
| 30 days | January 30, 2027 | Saturday |
| 45 days | February 14, 2027 | Sunday |
| 60 days | March 1, 2027 | Monday |
| 90 days | March 31, 2027 | Wednesday |
| 120 days | April 30, 2027 | Friday |
| 180 days | June 29, 2027 | Tuesday |
| 365 days | December 31, 2027 | Friday |
Calendar days counted from the start date, the day itself not counted. Deadlines written as 'within 90 days' are calendar days unless the contract or court rule says business days.
Counted from Thursday, September 17, 2026. The dates shown are the next ones to come round.
- Days apart
- 18
- Business days
- 12
- Weekend days
- 6
- That is
- 2 weeks and 4 days
New Year's Eve falls on Thursday, December 31, 2026 and Martin Luther King Jr. Day on Monday, January 18, 2027, which is 18 days later — 2 weeks and 4 days, or 12 business days counting Monday to Friday only. The first day is not counted and the last one is, the same way a calendar counts a stay. Both dates are fixed, so the gap is the same every year apart from leap-year shifts in the weekdays.
The next five years
| Year | Dates | Days apart |
|---|---|---|
| 2026 | December 31, 2026 → January 18, 2027 | 18 days |
| 2027 | December 31, 2027 → January 17, 2028 | 17 days |
| 2028 | December 31, 2028 → January 15, 2029 | 15 days |
| 2029 | December 31, 2029 → January 21, 2030 | 21 days |
| 2030 | December 31, 2030 → January 20, 2031 | 20 days |
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How many days are between New Year's Eve and Martin Luther King Jr. Day? 18 days. Source: https://www.calculateitnow.dev/days-between-new-years-eve-and-mlk-day