2004 is a leap year, so there are 366 days in the year.
You can also choose any day of the week and count how many times it occurs in 2004. Here are some shortcut links if you'd like to explore:
The total number of days between Thursday, January 1st, 2004 and Saturday, January 1st, 2005 is 366 days.
This is equal to 1 year.
This does not include the end date, so it's accurate if you're measuring your age in days, or the total days between the start and end date. But if you want the duration of an event that includes both the starting date and the ending date, then it would actually be 367 days.
If you're counting workdays or weekends, there are 262 weekdays and 104 weekend days.
If you include the end date of Jan 1, 2005 which is a Saturday, then there would be 262 weekdays and 105 weekend days including both the starting Thursday and the ending Saturday.
366 days is equal to 52 weeks and 2 days.
The total time span from 2004-01-01 to 2005-01-01 is 8,784 hours.
This is equivalent to 527,040 minutes.
You can also convert 366 days to 31,622,400 seconds.
January 1st, 2004 is a Thursday. It is the 1st day of the year, and in the 1st week of the year (assuming each week starts on a Monday), or the 1st quarter of the year. There are 31 days in this month. 2004 is a leap year, so there are 366 days in this year. The short form for this date is 1/1/2004.
January 1st, 2005 is a Saturday. It is the 1st day of the year, and in the 53rd week of the year (assuming each week starts on a Monday), or the 1st quarter of the year. There are 31 days in this month. 2005 is not a leap year, so there are 365 days in this year. The short form for this date is 1/1/2005.
This site provides an online date calculator to help you find the difference in the number of days between any two calendar dates. Simply enter the start and end date to calculate the duration of any event. You can also use this tool to determine how many days have passed since your birthday, or measure the amount of time until your baby's due date. The calculations use the Gregorian calendar, which was created in 1582 and later adopted in 1752 by Britain and the eastern part of what is now the United States. For best results, use dates after 1752 or verify any data if you are doing genealogy research. Historical calendars have many variations, including the ancient Roman calendar and the Julian calendar. Leap years are used to match the calendar year with the astronomical year. If you're trying to figure out the date that occurs in X days from today, switch to the Days From Now calculator instead.