January 2040 Calendar

Updated November 6, 2026 · Edited by the JanuaryCalendar.com team

January 2040 starts on Sunday, January 1, and ends on Tuesday, January 31. It has 31 days — 22 weekdays and 9 weekend days — and 20 working days in the US after New Year's Day (observed Mon, Jan 2) and Martin Luther King Jr. Day (Mon, Jan 16).

Because January 1 falls on a Sunday, the federal holiday is observed on Monday, January 2.

Starts
Sunday
Ends
Tuesday
Days
31
US working days
20
UK working days
21
Full moon
Jan 29

January 2040

PDF
January 2040 calendar with US holidays, observances and moon phases
SundayMondayTuesdayWednesdayThursdayFridaySaturday
1New Year's Day23456Epiphany7Last QuarterOrthodox Christmas
8910111213New Moon14
1516MLK Day17181920First Quarter21
22232425262728
29Full Moon3031

January 2040 holidays and observances

DateDayHoliday or observanceNotes
Jan 1SunNew Year's DayFalls on Sunday; observed Monday, January 2
Jan 6FriEpiphany (Three Kings Day)Religious
Jan 7SatOrthodox ChristmasReligious
Jan 14SatOrthodox New YearReligious
Jan 15SunMartin Luther King Jr.'s birthdayCultural
Jan 16MonMartin Luther King Jr. DayFederal holiday, third Monday
Jan 25WedBurns NightCultural
Jan 26ThuAustralia DayPublic holiday (Australia)
Jan 26ThuRepublic DayPublic holiday (India)
Jan 27FriInternational Holocaust Remembrance DayUN observance

Lunar New Year (Year of the Monkey) falls on Sunday, February 12, 2040, so it is not in January this year. Lunar New Year dates.

See January bank holidays for the UK, Canada, Australia and New Zealand, and national days for daily observances.

Key dates

  • Friday, January 13 – Friday the 13th
  • Tuesday, January 17 – Q4 2039 estimated tax payment due (IRS deadlines)
  • Sunday, January 29 – Full moon at 2:55 a.m. EST (07:55 UTC)
  • Tuesday, January 31 – W-2 and 1099-NEC forms due to workers and the IRS/SSA
  • Tuesday, January 31 – UK Self Assessment tax return and payment deadline

Moon phases

PhaseDate (Eastern)Time (EST)Time (UTC)
◑ Last QuarterSaturday, January 76:05 a.m. ESTJan 07, 11:05 UTC
● New MoonFriday, January 1310:25 p.m. ESTJan 14, 03:25 UTC
◐ First QuarterFriday, January 209:21 p.m. ESTJan 21, 02:21 UTC
○ Full MoonSunday, January 292:55 a.m. ESTJan 29, 07:55 UTC

Times calculated for Eastern Standard Time (UTC−5). About the Wolf Moon.

Week numbers

ISO weekDates in JanuaryDays
Week 52 of 2039January 1Sun
Week 1January 2 – 8Mon – Sun
Week 2January 9 – 15Mon – Sun
Week 3January 16 – 22Mon – Sun
Week 4January 23 – 29Mon – Sun
Week 5January 30 – 31Mon – Tue

ISO 8601 weeks start on Monday. How week numbers work.

Working days and weekdays

January 2040 has 20 working days in the United States (22 weekdays minus federal holidays on weekdays) and 21 in England and Wales. Monday, Tuesday and Sunday occur five times; every other weekday occurs four times.

WeekdayTimes in January 2040
Sunday5
Monday5
Tuesday5
Wednesday4
Thursday4
Friday4
Saturday4

Working days in every January.

Same calendar as January 2040

January always has 31 days, so any January that starts on a Sunday has the same layout. January 2040 matches January 2006, 2012, 2017, 2023, 2034, 2045. A printed calendar from any of those years can be reused for January — but check holidays such as MLK Day, which always lands on the third Monday.

Printable January 2040 calendar

Download PDFUS Letter · landscape · Sunday startPortrait PDFUS Letter · with notesA4 PDFA4 · landscape · Monday start
Printable January 2040 calendar preview with US holidays

Frequently asked questions

What day does January 2040 start on?

January 2040 starts on a Sunday and ends on a Tuesday, January 31.

How many working days are in January 2040?

January 2040 has 20 working days in the US and 21 in England and Wales, out of 22 weekdays.

When is MLK Day in 2040?

Martin Luther King Jr. Day falls on Monday, January 16, 2040, the third Monday of January.

Is January 1, 2040 a federal holiday?

Yes. New Year's Day is a US federal holiday. Because it falls on a Sunday, the holiday is observed on Monday, January 2.

When is the full moon in January 2040?

The full moon occurs on Sunday, January 29, 2040 at 2:55 a.m. EST (07:55 UTC).

Which weekdays occur five times in January 2040?

Monday, Tuesday and Sunday each occur five times in January 2040.

2040 calendar by month

Full 2040 calendar with all holidays

January calendars for other years