Name:

DST Period

Description:

Not Available

Authority:

United States Geological Survey, National Water Information System

Reference List

0 -2147483647 1917 -2147483647 1918 3 31 1918 10 27 1919 3 30 1919 10 26 1920 -2147483647 1941 -2147483647 1942 2 09 1942 12 31 1943 1 01 1944 12 31 1945 1 01 1945 9 30 1946 -2147483647 1966 -2147483647 1967 4 LSTSUN 1973 10 LSTSUN 1974 1 06 1974 10 LSTSUN 1975 2 23 1975 10 LSTSUN 1976 4 LSTSUN 1986 10 LSTSUN 1987 4 FSTSUN 2006 10 LSTSUN 2007 3 2NDSUN 9999 11 FSTSUN

Code	Sort Order	Valid Flag	Name	Description
Before 1918 no DST
In 1918 DST was March 31 to October 27
In 1919 DST was March 30 to October 26
No more DST until WW2
In 1942 DST started February 9 and ran all year
In 1943 and 1944 DST ran all year
In 1945 DST ended September 30
No more DST until 1967
DST started the last Sunday in April and ended the last Sunday in October
70's oil crisis, DST started early
70's oil crisis, DST started early
DST started the last Sunday in April and ended the last Sunday in October
DST started the first Sunday in April and ended the last Sunday in October
2005 energy bill, DST starts second Sunday in March, ends first Sunday in November