tzdata rule group

Winn

Historical rule context · 1 represented zone

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

First rule
1916
Last rule
2005
Rule entries
24
Source files
northamerica

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.

Original rule fields

Recorded rule entries

Structured directly from tzdata’s Rule lines.

FromToTypeInOnAtSave
1916only-Apr230:001:00
1916only-Sep170:000
1918only-Apr142:001:00
1918only-Oct272:000
1937only-May162:001:00
1937only-Sep262:000
1942only-Feb92:001:00
1945only-Aug1423:00u1:00
1945only-SeplastSun2:000
1946only-May122:001:00
1946only-Oct132:000
19471949-AprlastSun2:001:00
19471949-SeplastSun2:000
1950only-May12:001:00
1950only-Sep302:000
19511960-AprlastSun2:001:00
19511958-SeplastSun2:000
1959only-OctlastSun2:000
1960only-SeplastSun2:000
1963only-AprlastSun2:001:00
1963only-Sep222:000
19661986-AprlastSun2:00s1:00
19662005-OctlastSun2:00s0
19872005-AprSun>=12:00s1:00