Connect!
Export
Holidays optimizer
New version 2026
Todo
Birthdays
Teams
Define a period
AI Assistant
Assistant: Hello! I handle your requests in natural language, such as:

“Analyze the period from November 1, 2025, to April 25, 2028.”
or
“Add 100 business days to February 25, 2026.”
or
“Next Thursday at 2:12 PM + 124 working hours”
or
“I won't be working first week of next may (going to Greece)”
Assistant: I understand all languages.
Send
Make
every
day
count
..in the USA
| Colorado

Working days

EN | ES ▼
Employee  ▼
Australia
South Africa
New Zealand
Russia
Ukraine
Israel
Sweden
Denmark
Norway
Finland
Turkey
Portugal
Netherlands
Belgique
Monaco
Greece
Luxembourg
Working days world map
Canada
United Kingdom & Ireland
South Korea
China
México
Colombia
Venezuela
Brasil
Deutschland
Poland
Österreich
India
France
Italia
Japan
España
Argentina
Chile
Schweiz
...
xxxx
From to
days:
working days:
weekend days:
custom dates:
public holidays:
Define a period
×
From:
to:
Morning
Afternoon
Reminder
Reminder
▼
make it periodic
Make it periodic
Description
work hours
Work hours
/day
▼
Teleworking
wages
Wages
$
▼
Save Save
Delete Delete
Copy Copy
Paste Paste
▼
👤

Warning: Undefined variable $shared_access in /home/tcpcatch/www/usa/fond.php on line 3074
Pseudo
Choose a short display name visible in your account.

Profile
Profile 1
Id: - Employee


Security
Two-factor authentication
Not enabled
Protect your account with a verification code generated on your phone.
Account
Contact

How many working days in 1504 in USA (Colorado)?

In 1504, there are 249 working days in USA (Colorado).

This is calculated from:

  • 366 total days
  • 105 weekend days
  • 12 public holidays falling on weekdays

How is the calculation made?

Because 1504 is a leap year, it has 366 days.

Let's remove 53 saturdays and 53 sundays. It remains 261 days.

Now, let's remove 12 public holidays that do not fall during a weekend and we obtain 249 working days in 1504.

Frequently asked questions

How many working days in 1504 in USA (Colorado)?

There are 249 working days in 1504 in USA (Colorado).

How many weekend days are there in 1504?

There are 105 weekend days in 1504.

Is 1504 a leap year?

Yes. 1504 is a leap year and has 366 days.

How many public holidays fall on weekdays in 1504?

12 public holidays fall on weekdays in 1504.

Public holidays falling on weekdays in 1504

1. New Year's Day : Friday, January 1, 1504
2. Martin Luther King Day : Monday, January 18, 1504
3. Washington's Birthday : Monday, February 15, 1504
4. César Chávez Day : Thursday, March 31, 1504
5. Memorial Day : Monday, May 30, 1504
6. Juneteenth (observance) : Monday, June 20, 1504
7. Independence Day : Monday, July 4, 1504
8. Labor Day : Monday, September 5, 1504
9. Columbus Day : Monday, October 10, 1504
10. Veterans Day : Friday, November 11, 1504
11. Thanksgiving : Thursday, November 24, 1504
12. Christmas (observance) : Monday, December 26, 1504

Public holidays falling on a weekend

1. Juneteenth National Independence Day : Sunday, June 19, 1504
2. Christmas : Sunday, December 25, 1504

Explore more

How many working days in 1503 in USA (Colorado)?    How many working days in 1505 in USA (Colorado)?