Role-Playing Games           • Home           • Miscellaneous          
Shadowrun
Campaigns
Fiction
NERPS!
Runs
SOTA
Support

Shadowrun Calendars

Most GMs are quite content with abstractly following the flow of temporal progression in their games. A run may take place on any given night of the week and there is little importance to what day the Ides of March, 2063 takes place (a Thursday).

However, there are those GMs out there that would like a little more 'flavor reality' to insert into their Shadowrun game. Below is the formula for determining the days of the week for any given month from 2000 to 2083 (and beyond, with little work). The first table outlines the number of days in any particular month, more for ease of reference than anything else. The second set of tables are the 7 different possible types of months (Labeled A through G), where any given month can only start on 7 possible days and the end day is determined by the number of days in the actual month. The Third Table is a list of all the possible month-sets for a given year, common or leap year. If you know that a January for a given year starts on a Monday (Month A) then, by looking at this table, you can determine that October starts also starts on a Monday or, if it is a Leap year, October for that year starts on a Tuesday (Month B). The Final table lists the Start and End months for every year between 2000 and 2083. Years that are underlined are Leap years. Bold years are years through which the standard Shadowrun 'Current' game time has passed.

Now, if needed, a GM can determine on what night of the week Ryumyo was seen and Daniel Howling Coyote led his followers out of the Abilene Re-Education Center (a Saturday). Or that it was a Friday in which 1 out of every 10 adults goblinized on the 30th of April, 2021. Or that the Crash of '29 took place on a Thursday. You get my point.

Days in the Months
# of DaysMonth(s)
28February (Common Year)
29February (Leap Year)
30April, June, September, & November
31January, March, May, July, August, October, & December

Month Types
Month A
SunMonTueWedThuFriSat
1 2 3 4 5 6
7 8 9 10 11 12 13
14 15 16 17 18 19 20
21 22 23 24 25 26 27
28 29 30 31
Month B
SunMonTueWedThuFriSat
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
Month C
SunMonTueWedThuFriSat
1 2 3 4
5 6 7 8 9 10 11
12 13 14 15 16 17 18
19 20 21 22 23 24 25
26 27 28 29 30 31
Month D
SunMonTueWedThuFriSat
1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31
Month E
SunMonTueWedThuFriSat
1 2
3 4 5 6 7 8 9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30
31
Month F
SunMonTueWedThuFriSat
1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31
Month G
SunMonTueWedThuFriSat
1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21
22 23 24 25 26 27 28
29 30 31

Common & Leap Year Month Order
Common Years
JanFebMarAprMayJunJulAugSepOctNocDec
ADDGBEGCFADF
BEEACFADGBEG
CFFBDGBEACFA
DGGCEACFBDGB
EAADFBDGCEAC
FBBEGCEADFBD
GCCFADFBEGCE
Leap Years
JanFebMarAprMayJunJulAugSepOctNocDec
ADEACFADGBEG
BEFBDGBEACFA
CFGCEACFBDGB
DGADFBDGCEAC
EABEGCEADFBD
FBCFADFBEGCE
GCDGBEGCFADF

Roll of Years
YearStart MonthEnd MonthYearStart MonthEnd Month
2000FE2001AF
2002BG2003CA
2004DC2005FD
2006GE2007AF
2008BA2009DB
2010EC2011FD
2012GF2013BG
2014CA2015DB
2016ED2017GE
2018AF2019BG
2020CB2021EC
2022FD2023GE
2024AG2025CA
2026DB2027EC
Repeat Cycle
2028FE2029AF
2030BG2031CA
2032DC2033FD
2034GE2035AF
2036BA2037DB
2038EC2039FD
2040GF2041BG
2042CA2043DB
2044ED2045GE
2046AF2047BG
2048CB2049EC
2050FD2051GE
2052AG2053CA
2054DB2055EC
Repeat Cycle
2056FE2057AF
2058BG2059CA
2060DC2061FD
2062GE2063AF
2064BA2065DB
2066EC2067FD
2068GF2069BG
2070CA2071DB
2072ED2073GE
2074AF2075BG
2076CB2077EC
2078FD2079GE
2080AG2081CA
2082DB2083EC