Editing World Calendar (section)

== Features ==
The World Calendar is a 12-month, [[perennial calendar]] with equal quarters.<ref>{{cite web|title=The World Calendar Description|url=http://theworldcalendarin2017.org/TWC&D.JPG|archive-url=https://web.archive.org/web/20131209085258/http://theworldcalendarin2017.org/TWC&D.JPG|archive-date=2013-12-09|url-status=dead|access-date=7 December 2013|publisher=The World Calendar Association}}</ref>

Each quarter begins on a Sunday and ends on a Saturday. The quarters are equal: each has exactly 91 days, 13 weeks, or 3 months. The three months in each quarter have 31, 30, and 30 days respectively. Each quarter begins with the 31-day months of January, April, July, or October.

The World Calendar also has the following two additional days to maintain the same new year days as the [[Gregorian calendar]].

; Worldsday
: The last day of the year following Saturday 30 December. This additional day is dated "W" and named Worldsday, a year-end world holiday. It is followed by Sunday, 1 January in the new year.
; Leapyear Day
: This day is similarly added at the end of the second quarter in [[leap years]]. It is also dated "W" and named Leapyear Day. It is followed by Sunday, 1 July within the same year.

The World Calendar treats Worldsday and Leapyear Day as a 24-hour waiting period before resuming the calendar again. These off-calendar days, also known as "[[Intercalation (timekeeping)|intercalary days]]", are not assigned weekday designations. They are intended to be treated as holidays.

Because any three-month sequence repeats with the same arrangement of days, the World Calendar can be expressed concisely:

[[File:World-calendar-grid.svg|thumb]]

{| class="wikitable"
|+ World Calendar months layout, repeating each quarter-year
|-
| style="border-bottom: medium solid #A3BFB1"|
! style="border-bottom: medium solid #BFB1A3" colspan=5| 1st month
! style="border-bottom: medium solid #B1A3BF" colspan=4| 2nd month
! style="border-bottom: medium solid #A3B1BF" colspan=4| 3rd month
! style="border-bottom: medium solid #BFA3B1"| W
|-
! style="background:#CEF2E0"| Q1
! style="background:#F2E0CE" colspan=5| January
! style="background:#E0CEF2" colspan=4| February
! style="background:#CEE0F2" colspan=4| March
|
|-
! style="background:#CEF2E0"| Q2
! style="background:#F2E0CE" colspan=5| April
! style="background:#E0CEF2" colspan=4| May
! style="background:#CEE0F2" colspan=4| June
! style="background:#F2CEE0"|
|-
! style="background:#CEF2E0"| Q3
! style="background:#F2E0CE" colspan=5| July
! style="background:#E0CEF2" colspan=4| August
! style="background:#CEE0F2" colspan=4| September
|
|-
! style="background:#CEF2E0; border-bottom: medium solid #A3BFB1"| Q4
! style="background:#F2E0CE; border-bottom: medium solid #BFB1A3" colspan=5| October
! style="background:#E0CEF2; border-bottom: medium solid #B1A3BF" colspan=4| November
! style="background:#CEE0F2; border-bottom: medium solid #A3B1BF" colspan=4| December
! style="background:#F2CEE0; border-bottom: medium solid #BFA3B1"|

|-
!{{rh}}| [[Sunday|Su]]
| style="background:#F2E0CE" | 01
| style="background:#F2E0CE" | 08
| style="background:#F2E0CE" | 15
| style="background:#F2E0CE" | 22
| style="background:#F2E0CE" | 29
| style="background:#E0CEF2" | 05
| style="background:#E0CEF2" | 12
| style="background:#E0CEF2" | 19
| style="background:#E0CEF2" | 26
| style="background:#CEE0F2" | 03
| style="background:#CEE0F2" | 10
| style="background:#CEE0F2" | 17
| style="background:#CEE0F2" | 24
| rowspan=7|
|-
!{{rh}}| [[Monday|Mo]]
| style="background:#F2E0CE" | 02
| style="background:#F2E0CE" | 09
| style="background:#F2E0CE" | 16
| style="background:#F2E0CE" | 23
| style="background:#F2E0CE" | 30
| style="background:#E0CEF2" | 06
| style="background:#E0CEF2" | 13
| style="background:#E0CEF2" | 20
| style="background:#E0CEF2" | 27
| style="background:#CEE0F2" | 04
| style="background:#CEE0F2" | 11
| style="background:#CEE0F2" | 18
| style="background:#CEE0F2" | 25
|-
!{{rh}}| [[Tuesday|Tu]]
| style="background:#F2E0CE" | 03
| style="background:#F2E0CE" | 10
| style="background:#F2E0CE" | 17
| style="background:#F2E0CE" | 24
| style="background:#F2E0CE" | 31
| style="background:#E0CEF2" | 07
| style="background:#E0CEF2" | 14
| style="background:#E0CEF2" | 21
| style="background:#E0CEF2" | 28
| style="background:#CEE0F2" | 05
| style="background:#CEE0F2" | 12
| style="background:#CEE0F2" | 19
| style="background:#CEE0F2" | 26
|-
!{{rh}}| [[Wednesday|We]]
| style="background:#F2E0CE" | 04
| style="background:#F2E0CE" | 11
| style="background:#F2E0CE" | 18
| style="background:#F2E0CE" | 25
| style="background:#E0CEF2" | 01
| style="background:#E0CEF2" | 08
| style="background:#E0CEF2" | 15
| style="background:#E0CEF2" | 22
| style="background:#E0CEF2" | 29
| style="background:#CEE0F2" | 06
| style="background:#CEE0F2" | 13
| style="background:#CEE0F2" | 20
| style="background:#CEE0F2" | 27
|-
!{{rh}}| [[Thursday|Th]]
| style="background:#F2E0CE" | 05
| style="background:#F2E0CE" | 12
| style="background:#F2E0CE" | 19
| style="background:#F2E0CE" | 26
| style="background:#E0CEF2" | 02
| style="background:#E0CEF2" | 09
| style="background:#E0CEF2" | 16
| style="background:#E0CEF2" | 23
| style="background:#E0CEF2" | 30
| style="background:#CEE0F2" | 07
| style="background:#CEE0F2" | 14
| style="background:#CEE0F2" | 21
| style="background:#CEE0F2" | 28
|-
!{{rh}}| [[Friday|Fr]]
| style="background:#F2E0CE" | 06
| style="background:#F2E0CE" | 13
| style="background:#F2E0CE" | 20
| style="background:#F2E0CE" | 27
| style="background:#E0CEF2" | 03
| style="background:#E0CEF2" | 10
| style="background:#E0CEF2" | 17
| style="background:#E0CEF2" | 24
| style="background:#CEE0F2" | 01
| style="background:#CEE0F2" | 08
| style="background:#CEE0F2" | 15
| style="background:#CEE0F2" | 22
| style="background:#CEE0F2" | 29
|-
!{{rh}}| [[Saturday|Sa]]
| style="background:#F2E0CE" | 07
| style="background:#F2E0CE" | 14
| style="background:#F2E0CE" | 21
| style="background:#F2E0CE" | 28
| style="background:#E0CEF2" | 04
| style="background:#E0CEF2" | 11
| style="background:#E0CEF2" | 18
| style="background:#E0CEF2" | 25
| style="background:#CEE0F2" | 02
| style="background:#CEE0F2" | 09
| style="background:#CEE0F2" | 16
| style="background:#CEE0F2" | 23
| style="background:#CEE0F2" | 30
|-
!{{rh}}| W
| colspan=13| ''Worldsday'' follows December; ''Leapyear Day'' follows June
| style="background:#F2CEE0"| W
|}