The Millennium Mars Calendar at a Glance

Year Published 1998
Days per Week 7
Days per Month 33-34
Months per Year 20
Base Year Length 668
Leap Days 1
Leap Day Position end of year
Basic Intercalation Formula undefined
Extended Intercalation Formula
(\ denotes integer division)		 undefined
Mean Length of Calendar Year undefined
Base Astronomical Year Vernal Equinox
Accuracy undefined
Cycle of Perpetuity none
Mean LS of Beginning of Year 0.0
Year Count Start 0
Epoch (CE) 1975 Dec 24
Epoch (JD) 2442771
20-Month Naming Convention Greek mythological Days
1st Month Eos 33
2nd Month Hermes 33
3rd Month Eros 33
4th Month Aphrodite 34
5th Month Apollo 34
6th Month Athena 33
7th Month Poseidon 33
8th Month Helius 33
9th Month Demeter 34
10th Month Persephone 34
11th Month Artemis 33
12th Month Gaea 33
13th Month Selene 33
14th Month Theia 34
15th Month Boreas 34
16th Month Hestia 33
17th Month Hephaestus 33
18th Month Asclepius 33
19th Month Hera 34
20th Month Zeus 34-35
7-day Naming Convention English planetary
1st Day Solday
2nd Day Mercuryday
3rd Day Venusday
4th Day Earthday
5th Day Marsday
6th Day Jupiterday
7th Day Saturnday

Notes:

  1. This calendar is intended to begin with the Martian vernal equinox, but erroneously begins seven days later.

  2. This is one of several 20-month calendars.

Document The Millennium Mars Calendar
James M. Graham and Kandis Elliot
Calendar Calendar
Martian Time

Martian Time

Martian Time Survey

Martian Time Survey 2.2