What day of the week was January 17, 1943?

January 17, 1943 was a Sunday. You can work it out in your head with the Doomsday algorithm — this page shows the full step-by-step calculation.

What happened on January 17?

1706: Birth of Benjamin Franklin. 1942: Birth of Muhammad Ali

January 17, 1943 was a
Sunday

January 17, 1943 was a Sunday — that’s 30,506 days ago. Below you can see exactly how to work the weekday out in your head with the Doomsday algorithm, along with a few other facts about the date.

Weekday

Sunday

Day of year

17 of 365

ISO week

Week 2

Leap year?

Zodiac sign

Capricorn

Days ago

30,506

How to solve: January 17, 1943

1
Century anchor1900s→ Wednesday (3)
Practice →
2
Divide by 1243 ÷ 12→ 3
Practice →
3
Remainder of 1243 % 12→ 7
Practice →
4
Divide remainder by 47 ÷ 4→ 1
Practice →
5
Year's doomsday(3 + 3 + 7 + 1) % 7→ 0 → Sunday
Practice →
6
Month doomsdayJanuary→ 3rd
Practice →
7
Distance17 − 3→ 14
Practice →
8
Final answer(0 + 14) % 7→ 0 → Sunday

Now you try

Same month, one different day. You already know January 3 is a doomsday — count from there.

January 28, 1943

On this day in history

1706Birth of Benjamin Franklin
1942Birth of Muhammad Ali

Do this for any date, without looking it up

The Doomsday algorithm is six short steps. Most people get to a reliable answer in under 30 seconds after an afternoon of practice.

Learn the algorithm Play today’s challenge

Did you know? Did you know that Sunday roast is a traditional British meal typically served on Sundays?

January 17, 1943 was aSunday

How to solve: January 17, 1943

Now you try

On this day in history

Do this for any date, without looking it up

January 17, 1943 was aSunday

How to solve: January 17, 1943

Now you try

On this day in history

Do this for any date, without looking it up

January 17, 1943 was a
Sunday

January 17, 1943 was a
Sunday