The Vophick Calendar at a Glance

Year Published 1999
Days per Week 9
Days per Month Option 1: 41-42
Option 2: 20-21
Option 3: 41-42
Months per Year Option 1: 16
Option 2: 32
Option 3: 16
Base Year Length 668
Leap Days 1
Leap Day Position Option 1: end of 11th month (of 16)
Option 2: end of 22th month (of 32)
Option 3: end of 11th month (of 16)
Basic Intercalation Formula 4x668 + 6x669
Extended Intercalation Formula
(\ denotes integer division)		 Option 1: undefined
Option 2: undefined
Option 3: (Y-1)\2 + Y\10 - Y\100 + Y\500
Mean Length of Calendar Year 668.6
Base Astronomical Year Mean Tropical
Accuracy Option 1: 126 years
Option 2: 126 years
Option 3: ~1500 years
Cycle of Perpetuity undefined
Mean LS of Beginning of Year Option 1: 280.2
Option 2: 280.2
Option 3: 273.4
Year Count Start 1
Epoch (CE) Option 1: 1975 July 25
Option 2: 1975 July 25
Option 3: 1975 July 13
Epoch (JD) Option 1: 2440428
Option 2: 2440428
Option 3: 2440416
Naming Conventions Option 1:
Anglicized Roman + arbrtrary
(16 Months)
 Days Option 2:
Anglicized Roman + arbitrary
(32 Months)		 Days Option 3:
Anglicized Roman + Martian geographical
(16 Months)
 Days
1st Month January 42 January 21 January 42
2nd Month February
41 Atnough 21 February
41
3rd Month March 42 February
21 March 42
4th Month Geldof 42 Bithogin 20 Elysium 42
5th Month April 42 March 21 April 42
6th Month May 42 Kupf 21 May 42
7th Month June 41 Geldof 21 June 41
8th Month Yorte 42 Gysle 21 Olympus 42
9th Month July 42 April 21 July 42
10th Month August 42 Ghizzam 21 August 42
11th Month September 41-42 May 21 Marineris 41-42
12th Month Herjber 42 Natten 21 September 42
13th Month October 42 June 21 October 42
14th Month November 41 Hibtho 20 November 41
15th Month December 42 Yorte 21 December 42
16th Month Vidman 42 Jivv 21 Hellas 42
17th Month     July 21    
18th Month     Ognate 21    
19th Month     August 21    
20th Month     Phaichu 21    
21st Month     September 21    
22nd Month     Rilwha 20-21    
23rd Month     Herjber 21    
24th Month     Thogna 21    
25th Month     October 21    
26th Month     Vophick 21    
27th Month     November 21    
28th Month     Xurl 20    
29th Month     December 21    
30th Month     Islif 21    
31st Month     Vidman 21    
32nd Month     Zhimga 21    
9-day Naming Conventions English planetary + "sol" Latin planetary + "sol"
1st Day Sunisol Solsol
2nd Day Wensol Mercasol
3rd Day Frisol Vensol
4th Day Earsol Terrasol
5th Day Thursol Jupisol
6th Day Satursol Satursol
7th Day Urasol Urasol
8th Day Neptasol Neptasol
9th Day Plutosol Plutosol

Notes:

  1. Options 1 and 3 are examples of 16-month calendars.

  2. Option 2 is only example of a 32-month calendar.

Document Further Thoughts on Vophicism
Mark Knoke
Document Towards a Better Martian Calendar
Mark Knoke
Calendar Option 1
Calendar Option 2
Calendar Option 3
Martian Time

Martian Time

Martian Time Survey

Martian Time Survey 2.2