Day Counter
A Day Counter is a very convenient form of monitoring the number of days between two dates. It could be summer vacation countdown, group project deadline, or a personal milestone; this tool spews out the results in the form of Calendar days or Workdays. It is free, easy, and trustworthy, and it is accurate, without being confusing.
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Day Counter: How do I use it?
Need a countdown? Today, Counter’s got you covered!
Have you ever wondered how many days are left until that deadline or how long your next vacation will last? This nifty date counter can help you out! It works backward, so you can figure out how many days have passed since a historical event (think: how long has it been since the first moon landed?).
Here’s the lowdown on how to use it:
Just enter two dates—one to start counting from and another as the end date.
You need to know how many days until your work project is due. Enter today’s date and your deadline, then click “Count Days.” Very easy!
Feel nostalgic? Input a date in the past (say, your birthday) and today’s date to see how many days it’s been. Don’t forget to choose whether you want to include the first day in your count!
This counter can handle any two dates on the calendar. Curious about how long it is between Independence Day, Christmas, and Mother’s Day? Just enter those dates and let the calculator do the work!
I need to know how many weeks fall between the two dates. This counter can show you that, too! This comes in handy when needing to count down workdays, but remember that it will not consider holidays that may fall within the period. To get a very accurate workday calculation, subtract the total number of holidays from the total number of weekdays. The workday calculator will show you.
If you happen to have any confusion or doubt, please check with our Day Counter.
If you have any confusion or doubt, please verify with our Day Counter.
That is why the primary purpose of the Day Counter is to bring clarity and ease the Day’s computation. This is ideal for computing the Day. This way, at least you can avoid spending a great deal of time on it and select the best solution available.
Day of the week
For the selected dates, the calculator further displays the day of the week. There are several algorithms available for figuring out the day of the week. One of them is known as the Doomsday Rule; it is an algorithm created by John Conway that may be performed mentally with practice.
Doomsdays
The secret hidden in this whole thing is something called ‘doomsdays.’ These are special dates throughout the year that always land on the same weekday, no matter what. But the actual day they fall on changes every year. The table below shows you which days fall in each month.

Doomsdays by month
Jan | Fab | Mar | Apr |
---|---|---|---|
1/3* | 2/28* | 3/14 | 4/4 |
May | Jun | Jul | Aug |
5/9 | 6/6 | 7/11 | 8/8 |
Sep | Oct | Nov | Dec |
9/5 | 10/10 | 11/7 | 12/12 |
Numerical representation of days of the week
Sun | Mon | Tue | Wed | Thu | Fri | Sat |
---|---|---|---|---|---|---|
0 | 1 | 2 | 3 | 4 | 5 | 6 |
Anchor days by century
1900 | 2000 | 2100 | 2200 |
---|---|---|---|
Wednesday | Tuesday | Sunday | Friday |