Calendar 2040

2040

Leap year, 366 days

Starts on a Sunday and ends on a Monday

January
MTWTFSS
1
2345678
9101112131415
16171819202122
23242526272829
3031
February
MTWTFSS
12345
6789101112
13141516171819
20212223242526
272829
March
MTWTFSS
1234
567891011
12131415161718
19202122232425
262728293031
April
MTWTFSS
1
2345678
9101112131415
16171819202122
23242526272829
30
May
MTWTFSS
123456
78910111213
14151617181920
21222324252627
28293031
June
MTWTFSS
123
45678910
11121314151617
18192021222324
252627282930
July
MTWTFSS
1
2345678
9101112131415
16171819202122
23242526272829
3031
August
MTWTFSS
12345
6789101112
13141516171819
20212223242526
2728293031
September
MTWTFSS
12
3456789
10111213141516
17181920212223
24252627282930
October
MTWTFSS
1234567
891011121314
15161718192021
22232425262728
293031
November
MTWTFSS
1234
567891011
12131415161718
19202122232425
2627282930
December
MTWTFSS
12
3456789
10111213141516
17181920212223
24252627282930
31

Key figures

366days in 2040
52ISO weeks
Sundayfirst day
Mondaylast day
261weekdays
52Saturdays
366days left
0%complete

2040 in numbers

2040 is a leap year with 366 days, because February has an extra day. It begins on a Sunday and ends on a Monday, and it contains 52 ISO weeks, 261 weekdays and 52 Saturdays. Leap years follow a simple rule: divisible by four, except century years that are not divisible by 400. The shortest month is February and the longest months, at 31 days, are January, March, May, July, August, October and December.

2040 has not started

2040 starts on Sunday, January 1, 2040 — 4,841 days from today, Wednesday, September 30, 2026. Once it begins it will have 366 days, 52 ISO weeks and 261 weekdays to plan around.

How to use this page

The calendar above marks today where it applies and lays each month out with weeks starting on Monday, the ISO convention. It is useful for spotting long weekends and planning around month boundaries.

Holidays and observances in 2040

The next dates worth planning around in 2040 are New Year (Sunday, January 1); Martin Luther King Jr. Day (Monday, January 16); Groundhog Day (Thursday, February 2); Chinese New Year (Sunday, February 12). The full list, with the number of days from today for each, is on the 2040 holiday calendar, and every name there links to a countdown in days, weeks or months.

Planning around the year

Quarter one runs from January 1 to March 31, quarter two ends on June 30, quarter three on September 30 and quarter four on December 31. Payroll, tax deadlines, school terms and fiscal reporting are all built on those boundaries. If you are planning across a year end, note that Monday, December 31, 2040 is the last day and Tuesday, January 1, 2041 is the first day of the next year.

Today's date at a glance

Today is Wednesday, September 30, 2026. That is day 273 of 365 in 2026, in ISO week 40, with 92 days to go before the year ends. The next dates people plan around are Diwali on Saturday, October 10; Columbus Day on Monday, October 12; Halloween on Saturday, October 31. The moon is a Waning Gibbous tonight, with about 81% of its face lit. All of these figures are recalculated when the page loads, so they always describe the day you open it, not the day the page was published.

Frequently asked questions

How many days are in 2040?

2040 has 366 days because it is a leap year.

Is 2040 a leap year?

Yes. February has 29 days in 2040.

What day of the week does 2040 start on?

January 1, 2040 is a Sunday.

What day of the week does 2040 end on?

December 31, 2040 is a Monday.

How many weeks are in 2040?

There are 52 ISO weeks in 2040, and 52 full weeks plus 2 extra days.

How many weekdays are in 2040?

There are 261 weekdays (Monday to Friday), before holidays are removed.

How many Saturdays are in 2040?

2040 has 52 Saturdays.

How many days are left in 2040?

As of today, 366 days are left in 2040.

How many weeks are left in 2040?

About 52 full weeks and 2 days are left in 2040.

How many months are left in 2040?

12 whole months remain after the current month.

What percentage of 2040 is complete?

0% of 2040 is complete.

How many working days are left in 2040?

261 weekdays remain, before public holidays.

When does each quarter of 2040 start?

Q1 starts January 1, Q2 April 1, Q3 July 1 and Q4 October 1.

What is the next holiday in 2040?

New Year on Sunday, January 1, 2040.

What is the leap-year rule?

A year is a leap year if it is divisible by 4, except century years, which must also be divisible by 400.

Does this page update itself?

Yes. All figures are recalculated from today's date whenever the page loads, in the -04:00 time zone.

Can I view a different year?

Yes. Use the year links below or type any year into the box above.

More countdowns and calculators

Yearly Calendar for other years

More tools for 2040

Countdowns in 2040

Countdown calculators

Date calculators

Browse categories