tzdata rule group
Poland
Historical rule context · 2 represented zones
A rule group describes recurring clock changes. It is not itself a place or an IANA time-zone identifier.
- First rule
- 1918
- Last rule
- 1964
- Rule entries
- 20
- 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.
Whitman gives 1944 Nov 30; go with Shanks & Pottenger.
Where it appears
Zones using Poland
Only historically distinct canonical zones from this atlas are listed.
Russia
PolandOriginal rule fields
Recorded rule entries
Structured directly from tzdata’s Rule lines.
| From | To | Type | In | On | At | Save |
|---|---|---|---|---|---|---|
| 1918 | 1919 | - | Sep | 16 | 2:00s | 0 |
| 1919 | only | - | Apr | 15 | 2:00s | 1:00 |
| 1944 | only | - | Apr | 3 | 2:00s | 1:00 |
| 1944 | only | - | Oct | 4 | 2:00 | 0 |
| 1945 | only | - | Apr | 29 | 0:00 | 1:00 |
| 1945 | only | - | Nov | 1 | 0:00 | 0 |
| 1946 | only | - | Apr | 14 | 0:00s | 1:00 |
| 1946 | only | - | Oct | 7 | 2:00s | 0 |
| 1947 | only | - | May | 4 | 2:00s | 1:00 |
| 1947 | 1949 | - | Oct | Sun>=1 | 2:00s | 0 |
| 1948 | only | - | Apr | 18 | 2:00s | 1:00 |
| 1949 | only | - | Apr | 10 | 2:00s | 1:00 |
| 1957 | only | - | Jun | 2 | 1:00s | 1:00 |
| 1957 | 1958 | - | Sep | lastSun | 1:00s | 0 |
| 1958 | only | - | Mar | 30 | 1:00s | 1:00 |
| 1959 | only | - | May | 31 | 1:00s | 1:00 |
| 1959 | 1961 | - | Oct | Sun>=1 | 1:00s | 0 |
| 1960 | only | - | Apr | 3 | 1:00s | 1:00 |
| 1961 | 1964 | - | May | lastSun | 1:00s | 1:00 |
| 1962 | 1964 | - | Sep | lastSun | 1:00s | 0 |