tzdata rule group
GB-Eire
Historical rule context · 6 represented zones
A rule group describes recurring clock changes. It is not itself a place or an IANA time-zone identifier.
- First rule
- 1916
- Last rule
- 1995
- Rule entries
- 65
- 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.
Summer Time Act, 1916
Where it appears
Zones using GB-Eire
Only historically distinct canonical zones from this atlas are listed.
Ireland
GI
Guernsey
Isle of Man
Jersey
United KingdomOriginal rule fields
Recorded rule entries
Structured directly from tzdata’s Rule lines.
| From | To | Type | In | On | At | Save |
|---|---|---|---|---|---|---|
| 1916 | only | - | May | 21 | 2:00s | 1:00 |
| 1916 | only | - | Oct | 1 | 2:00s | 0 |
| 1917 | only | - | Apr | 8 | 2:00s | 1:00 |
| 1917 | only | - | Sep | 17 | 2:00s | 0 |
| 1918 | only | - | Mar | 24 | 2:00s | 1:00 |
| 1918 | only | - | Sep | 30 | 2:00s | 0 |
| 1919 | only | - | Mar | 30 | 2:00s | 1:00 |
| 1919 | only | - | Sep | 29 | 2:00s | 0 |
| 1920 | only | - | Mar | 28 | 2:00s | 1:00 |
| 1920 | only | - | Oct | 25 | 2:00s | 0 |
| 1921 | only | - | Apr | 3 | 2:00s | 1:00 |
| 1921 | only | - | Oct | 3 | 2:00s | 0 |
| 1922 | only | - | Mar | 26 | 2:00s | 1:00 |
| 1922 | only | - | Oct | 8 | 2:00s | 0 |
| 1923 | only | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1923 | 1924 | - | Sep | Sun>=16 | 2:00s | 0 |
| 1924 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1925 | 1926 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1925 | 1938 | - | Oct | Sun>=2 | 2:00s | 0 |
| 1927 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1928 | 1929 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1930 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1931 | 1932 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1933 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1934 | only | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1935 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1936 | 1937 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1938 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1939 | only | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1939 | only | - | Nov | Sun>=16 | 2:00s | 0 |
| 1940 | only | - | Feb | Sun>=23 | 2:00s | 1:00 |
| 1941 | only | - | May | Sun>=2 | 1:00s | 2:00 |
| 1941 | 1943 | - | Aug | Sun>=9 | 1:00s | 1:00 |
| 1942 | 1944 | - | Apr | Sun>=2 | 1:00s | 2:00 |
| 1944 | only | - | Sep | Sun>=16 | 1:00s | 1:00 |
| 1945 | only | - | Apr | Mon>=2 | 1:00s | 2:00 |
| 1945 | only | - | Jul | Sun>=9 | 1:00s | 1:00 |
| 1945 | 1946 | - | Oct | Sun>=2 | 2:00s | 0 |
| 1946 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1947 | only | - | Mar | 16 | 2:00s | 1:00 |
| 1947 | only | - | Apr | 13 | 1:00s | 2:00 |
| 1947 | only | - | Aug | 10 | 1:00s | 1:00 |
| 1947 | only | - | Nov | 2 | 2:00s | 0 |
| 1948 | only | - | Mar | 14 | 2:00s | 1:00 |
| 1948 | only | - | Oct | 31 | 2:00s | 0 |
| 1949 | only | - | Apr | 3 | 2:00s | 1:00 |
| 1949 | only | - | Oct | 30 | 2:00s | 0 |
| 1950 | 1952 | - | Apr | Sun>=14 | 2:00s | 1:00 |
| 1950 | 1952 | - | Oct | Sun>=21 | 2:00s | 0 |
| 1953 | only | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1953 | 1960 | - | Oct | Sun>=2 | 2:00s | 0 |
| 1954 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1955 | 1956 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1957 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1958 | 1959 | - | Apr | Sun>=16 | 2:00s | 1:00 |
| 1960 | only | - | Apr | Sun>=9 | 2:00s | 1:00 |
| 1961 | 1963 | - | Mar | lastSun | 2:00s | 1:00 |
| 1961 | 1968 | - | Oct | Sun>=23 | 2:00s | 0 |
| 1964 | 1967 | - | Mar | Sun>=19 | 2:00s | 1:00 |
| 1968 | only | - | Feb | 18 | 2:00s | 1:00 |
| 1972 | 1980 | - | Mar | Sun>=16 | 2:00s | 1:00 |
| 1972 | 1980 | - | Oct | Sun>=23 | 2:00s | 0 |
| 1981 | 1995 | - | Mar | lastSun | 1:00u | 1:00 |
| 1981 | 1989 | - | Oct | Sun>=23 | 1:00u | 0 |
| 1990 | 1995 | - | Oct | Sun>=22 | 1:00u | 0 |