Conversation so far:
when did daylight savings time start in nc
During World War I, North Carolina adopted Daylight Time for the periods 31 Mar.-27 Oct. 1918 and 30 Mar.-26 Oct. 1919.
When did Daylight Saving Time start nationally
Daylight Saving Time was first implented by the federal government in 1918 under the Standard Time Act. The Daylight Saving Time portion of the law was repealed in 1919.

Question: Do all the states participate
Self-contained rewrite: Do all the states participate in Daylight Saving Time