Calendars
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Popularity Index: 22
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Subtopics
23 subtopics
Years
Observances
Seasons
Types of year
Weeks
Months
Calendaring software
Date and time representation
Days
Calendar eras
Anniversaries
Calendaring standards
Specific calendars
Proposed calendars
Old Style leap years
Solar calendars
Calendar algorithms
Time formatting and storage bugs
Old Calendarism
Lunar calendars
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