Calendar with Week Number Calculator

Calculates and displays the calendar with week numbers.

Calendar with Week Number
    1.       Year
    2.   

    1. The first day of week
    1.    
    2. Monday/ISO Sunday/USA Saturday
    1. Week number   
    2. display no
    1. Calendar format
    2. monthly weekly
 
The first week of the ISO calendar system is the week with the year's first Thursday in it. It is mainly used in Europe.
The first week of USA calendar system is the week that contains January 1st.

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