What Date Is 100 Days Ago From Today?

Are you trying to figure out what the date was one hundred days ago?

icon for a calendar with one day highlighted red

Date 100 Days Ago

Monday, November 20, 2023

The date 100 days ago from today is Monday, November 20, 2023. This calculation is made using the today's date, which is February 28, 2024.

You can validate this result using our days from today calculator or our time duration calculator.

The following chart shows the date 100 days ago from today and various other days.
Start DateDate 100 Days Prior
February 24, 2024November 16, 2023
February 25, 2024November 17, 2023
February 26, 2024November 18, 2023
February 27, 2024November 19, 2023
February 28, 2024November 20, 2023
February 29, 2024November 21, 2023
March 1, 2024November 22, 2023
March 2, 2024November 23, 2023
March 3, 2024November 24, 2023

How to Calculate the Date 100 Days Ago

You can figure out the date one hundred days ago manually by using a calendar. Look at today's date on the calendar and count backward one day at a time until you've counted 100 total days.

Instead of counting up, you can move backward one day at a time while subtracting 1 from 100 for each day you move backward. You can also move backward one week at a time while subtracting seven from 100 for each week you move backward.

Continue this process of subtracting the days until your original number has reached zero. This is the date 100 days ago.

100 Weekdays Ago From Today

If you want to consider only weekdays and ignore days that fall on the weekend, then the date one hundred weekdays ago is Wednesday, October 11, 2023.

You can also use this method to find the date in 100 days.

Date 100 Weekdays Ago

Wednesday, October 11, 2023

It's important to note that this date does not consider holidays that may fall on a weekday. So, you'll need to adjust this to account for any weekday holidays if you're trying to calculate the date 100 business days ago.

You can use a tool such as our day counter to simplify this process.

How Much Time Is One Hundred Days Ago?

One hundred days ago is the same amount of time as:

More Dates Relative to Today