tzdata rule group
Edm
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
- 1918
- Last rule
- 2006
- Rule entries
- 13
- 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.
War
Peace
Where it appears
Zones using Edm
Only historically distinct canonical zones from this atlas are listed.
CanadaOriginal rule fields
Recorded rule entries
Structured directly from tzdata’s Rule lines.
| From | To | Type | In | On | At | Save |
|---|---|---|---|---|---|---|
| 1918 | 1919 | - | Apr | Sun>=8 | 2:00 | 1:00 |
| 1918 | only | - | Oct | 27 | 2:00 | 0 |
| 1919 | only | - | May | 27 | 2:00 | 0 |
| 1920 | 1923 | - | Apr | lastSun | 2:00 | 1:00 |
| 1920 | only | - | Oct | lastSun | 2:00 | 0 |
| 1921 | 1923 | - | Sep | lastSun | 2:00 | 0 |
| 1942 | only | - | Feb | 9 | 2:00 | 1:00 |
| 1945 | only | - | Aug | 14 | 23:00u | 1:00 |
| 1945 | only | - | Sep | lastSun | 2:00 | 0 |
| 1947 | only | - | Apr | lastSun | 2:00 | 1:00 |
| 1947 | only | - | Sep | lastSun | 2:00 | 0 |
| 1972 | 1986 | - | Apr | lastSun | 2:00 | 1:00 |
| 1972 | 2006 | - | Oct | lastSun | 2:00 | 0 |