Editing Soviet calendar (section)

=== Gregorian calendar ===
[[File:Sovnarkom-Gregorian-Calendar-Decree-izo39.jpg|thumb|upright=0.7|left|1918 decree adopting the "Western European calendar" (click on image for translation)]]

The Gregorian calendar was implemented in Russia on {{nowrap|14 February 1918}} by dropping the [[Julian calendar|Julian]] dates of {{nowrap|1–13 February 1918}} pursuant to a [[Sovnarkom]] decree signed {{nowrap|24 January 1918}} (Julian) by [[Vladimir Lenin]]. The decree required that the Julian date was to be written in parentheses after the Gregorian date until {{nowrap|1 July 1918.<ref name=Grigorenko>[http://grigam.narod.ru/kalend/kalen19.htm История календаря в России и в СССР (Calendar history in Russia and the USSR)] {{Webarchive|url=https://web.archive.org/web/20091017163723/http://grigam.narod.ru/kalend/kalen19.htm |date=17 October 2009 }}, chapter 19 in История календаря и хронология by Селешников (History of the calendar and chronology by Seleschnikov) {{in lang|ru}}. [http://www.niv.ru/library/006/001.htm ДЕКРЕТ "О ВВЕДЕНИИ ЗАПАДНО-ЕВРОПЕЙСКОГО КАЛЕНДАРЯ" (Decree "On the introduction of the Western European calendar")] {{webarchive|url=https://web.archive.org/web/20070121144021/http://www.niv.ru/library/006/001.htm |date=21 January 2007 }} contains the full text of the decree {{in lang|ru}}.</ref>}} All surviving examples of physical calendars from {{nowrap|1929–40}} show the irregular month lengths of the Gregorian calendar (such as those displayed here). Most calendars displayed all the days of a Gregorian year as a grid with seven rows or columns for the traditional seven-day week with Sunday (Воскресенье; "Resurrection") first.
[[File:Soviet calendar 1931 pocket.jpg|thumb|upright=1.1| Soviet pocket calendar, 1931 <br/> Numbered five-day work week, excluding five national holidays]]
The 1931 pocket calendar displayed here is a rare example that excluded the five [[#National holidays|national holidays]], enabling the remaining 360 days of the Gregorian year to be displayed as a grid with five rows labeled {{nowrap|I–V}} for each day of the five-day week.<ref name=Malyavin>[http://mkkkk.narod.ru/Fr313.htm ИЗ ИСТОРИИ ОТЕЧЕСТВЕННОГО КАРМАННОГО КАЛЕНДАРЯ by Дмитрий Малявин] {{Webarchive|url=https://web.archive.org/web/20221116003246/http://mkkkk.narod.ru/Fr313.htm |date=16 November 2022 }} ("Calendar stories from reforms in the USSR" by Dmitry Malyavin) {{in lang|ru}} Does not mention colors, only numbers.</ref> Even it had the full Gregorian calendar on the other side.