| Year : 1908 - Seoul South Korea |
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| Back to standard time on wednesday 01 april 1908 00 h 02 (GMT + 8 h 30) KST |
| Year : 1912 - Seoul South Korea |
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| Back to standard time on monday 01 january 1912 00 h 30 (GMT + 9 h ) JST |
| Year : 1945 - Seoul South Korea |
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| Back to standard time on saturday 08 september 1945 00 h 00 (GMT + 9 h ) KST |
| Year : 1948 - Seoul South Korea |
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| Transition to daylight saving time on thuesday 01 june 1948 01 h 00 (GMT + 10 h ) KDT |
| Back to standard time on sunday 12 september 1948 23 h 00 (GMT + 9 h ) KST |
| Year : 1949 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 03 april 1949 01 h 00 (GMT + 10 h ) KDT |
| Back to standard time on saturday 10 september 1949 23 h 00 (GMT + 9 h ) KST |
| Year : 1950 - Seoul South Korea |
|---|
| Transition to daylight saving time on saturday 01 april 1950 01 h 00 (GMT + 10 h ) KDT |
| Back to standard time on saturday 09 september 1950 23 h 00 (GMT + 9 h ) KST |
| Year : 1951 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 06 may 1951 01 h 00 (GMT + 10 h ) KDT |
| Back to standard time on saturday 08 september 1951 23 h 00 (GMT + 9 h ) KST |
| Year : 1954 - Seoul South Korea |
|---|
| Back to standard time on saturday 20 march 1954 23 h 30 (GMT + 8 h 30) KST |
| Year : 1955 - Seoul South Korea |
|---|
| Transition to daylight saving time on thursday 05 may 1955 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on thursday 08 september 1955 23 h 00 (GMT + 8 h 30) KST |
| Year : 1956 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 20 may 1956 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on saturday 29 september 1956 23 h 00 (GMT + 8 h 30) KST |
| Year : 1957 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 05 may 1957 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on saturday 21 september 1957 23 h 00 (GMT + 8 h 30) KST |
| Year : 1958 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 04 may 1958 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on saturday 20 september 1958 23 h 00 (GMT + 8 h 30) KST |
| Year : 1959 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 03 may 1959 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on saturday 19 september 1959 23 h 00 (GMT + 8 h 30) KST |
| Year : 1960 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 01 may 1960 01 h 00 (GMT + 9 h 30) KDT |
| Back to standard time on saturday 17 september 1960 23 h 00 (GMT + 8 h 30) KST |
| Year : 1961 - Seoul South Korea |
|---|
| Back to standard time on thursday 10 august 1961 00 h 30 (GMT + 9 h ) KST |
| Year : 1987 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 10 may 1987 03 h 00 (GMT + 10 h ) KDT |
| Back to standard time on sunday 11 october 1987 02 h 00 (GMT + 9 h ) KST |
| Year : 1988 - Seoul South Korea |
|---|
| Transition to daylight saving time on sunday 08 may 1988 03 h 00 (GMT + 10 h ) KDT |
| Back to standard time on sunday 09 october 1988 02 h 00 (GMT + 9 h ) KST |
