Virtual Perpetual Calendars
20th and 21st Centuries Year Correlations Millenniums and Centuries
US & Canadian Holidays
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2010-2015 2015-2020
Methods
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Calendars by Weekdays
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Definitions Calendar Types Julian to
Gregorian Change
Time Units
Utilities Days between Dates Weekday for Date  
External Sites Other Calendar Reference Pointers Here
Internal Info Updates Acknowledgements Notes

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