If time were an accountant, its favourite object would be a calendar, as keeping count of when things happen is one of its functions.

This is demonstrated by the very origins of the word, going back all the way to ancient Greek and Roman times (see for example the Collins Dictionary or the Online Etymology Dictionary.

Calendars have continually being altered and corrected and sometimes completely redefined.

Would you like to find out more about:

• Calendar systems
• Lunar calendars
• Dates for the Lunar New Year
• Days of the week in official EU languages
• How is each month called in Various European languages?
• When did our new millennium actually start?
• The Solstice as a halfway house of the year
• Natal charts - a very personal calendar
• Panchang: Indian astrology and time-management
• British Summer Time (BST)
• BST dates
• Fat Tuesday? Yes, Mardi Gras