The Henry Calendar at a Glance

Notes:

1. This is one of several Asymmetric Gregorian Martian calendars, which generally have the following characteristics:

   • Divide the Martian year into 12 months, asymmetrically stretched to encompass approximately equal arcs of the Martian elliptical orbit.

   • Retain the seven-day week.

   • Begin the year near the Winter solstice

   • Place the leap day(s) in the second month.

   • Base the month names on the traditional Roman names

2. Other types of 12-month calendars are:

   • Symmetric Gregorian Martian calendars

   • Asymmetric Zodiacal Martian calendars

   • Symmetric Zodiacal Martian calendars

	Calendar
	Martian Time
	Martian Time Survey 2.2