Days of the Week in 1940
1940 began on a Monday and was a leap year of 366 days. Its doomsday was Thursday, which is the weekday shared by 4 April, 6 June, 8 August, 10 October and 12 December that year.
15 June 1940
Day 167 of 1940 · ISO week 24 of 1940
15 June 1940 was a Saturday. That was 31,464 days ago, which is 86 years.
Work it out in your head
Every year has a doomsday: the weekday shared by 4/4, 6/6, 8/8, 10/10, 12/12, 5/9, 9/5, 7/11, 11/7 and the last day of February. Learn the year's doomsday and any date is a short sum from the nearest anchor.
| Doomsday for 1940 | Thursday |
|---|---|
| Nearest anchor | 6/6 |
| Step from the anchor | +9 days |
| Step, modulo 7 | 2 |
| Result | Saturday |
| Year | Years from 1940 |
|---|---|
| 1946 | 6 |
| 1957 | 17 |
| 1963 | 23 |
| 1968 | 28 |
Every month of 1940
The weekday each month opened and closed on. Between the two, every date in that month is a short count away, and the tool above gives it exactly.
| Month | 1st was a | Last day was a | Days |
|---|---|---|---|
| January | Monday | Wednesday | 31 |
| February | Thursday | Thursday | 29 |
| March | Friday | Sunday | 31 |
| April | Monday | Tuesday | 30 |
| May | Wednesday | Friday | 31 |
| June | Saturday | Sunday | 30 |
| July | Monday | Wednesday | 31 |
| August | Thursday | Saturday | 31 |
| September | Sunday | Monday | 30 |
| October | Tuesday | Thursday | 31 |
| November | Friday | Saturday | 30 |
| December | Sunday | Tuesday | 31 |
1940 at a glance
| 1 January | Monday |
|---|---|
| 31 December | Tuesday |
| Leap year | Yes, February had 29 days |
| Days in the year | 366 |
| ISO weeks | 52 |
| Doomsday | Thursday |
| Days since 1 January 1940 | 31,630 |
Using the doomsday for 1940
The doomsday for 1940 was Thursday. That single fact gives you ten dates for free: 4 April, 6 June, 8 August, 10 October and 12 December were all Thursdays, and so were 9 May, 5 September, 11 July, 7 November and 29 February.
From any of those, count forwards or backwards to the date you want and take the remainder after dividing by seven. The working panel under the result does it for you on whatever date you enter, so you can check yourself while you learn the method.
Frequently asked questions
What day of the week was 1 January 1940?
A Monday. 1940 was a leap year, so it ran to 366 days and ended on a Tuesday.
Was 1940 a leap year?
Yes. 1940 divides by four and is not a century year, so February had 29 days.
How old is someone born in 1940?
They turn 86 during 2026, or are 85 until their birthday. For an exact figure to the day, use the age calculator with the full date of birth.