Civil Time AtlasIANA time zone data

tzdata rule group

Russia

Historical rule context · 33 represented zones

A rule group describes recurring clock changes. It is not itself a place or an IANA time-zone identifier.

First rule
1917
Last rule
2010
Rule entries
16
Source files
europe

Notes from the time database

Context for this rule

These source notes are preserved from tzdata. They help explain a rule’s period, without adding claims beyond the source.

1917

Rule context

Moscow Summer Time

1961–2010

Rule context

Decree No. 142 (1917-12-22)

1917

Rule context

Moscow Mean Time

1918

Rule context

Moscow Double Summer Time

Where it appears

Zones using Russia

Only historically distinct canonical zones from this atlas are listed.

Original rule fields

Recorded rule entries

Structured directly from tzdata’s Rule lines.

FromToTypeInOnAtSave
1917only-Jul123:001:00
1917only-Dec280:000
1918only-May3122:002:00
1918only-Sep161:001:00
1919only-May3123:002:00
1919only-Jul10:00u1:00
1919only-Aug160:000
1921only-Feb1423:001:00
1921only-Mar2023:002:00
1921only-Sep10:001:00
1921only-Oct10:000
19811984-Apr10:001:00
19811983-Oct10:000
19841995-SeplastSun2:00s0
19852010-MarlastSun2:00s1:00
19962010-OctlastSun2:00s0