Start Date
End Date
Week
45
Of 52
Additional Info
First Day:
01/04/21
Last Day:
01/02/22
Day of The Year:
310/364
Day of Current Year:
313/365
Week of the Year Calculation
The numbers above are calculated using the ISO week date system. This system is used broadly by governments and private businesses. There are other week systems that vary but they work similarly.
The ISO week systems first day of the week is Monday and the first week of the year is the first week that has 4 or more days from that year in it. That means the week year can start before the 1st or after.