폐지된 나라
http://newslibrary.naver.com/viewer/index.nhn?articleId=1988050900329215001&editNo=3&printCount=1&publishDate=1988-05-09&officeId=00032&pageNo=15&printNo=13110&publishType=00020
http://newslibrary.naver.com/viewer/index.nhn?articleId=1988050900329215001&editNo=3&printCount=1&publishDate=1988-05-09&officeId=00032&pageNo=15&printNo=13110&publishType=00020녹색성장위 “서머타임 조기 도입”
http://news.khan.co.kr/kh_news/khan_art_view.html?artid=200902161842575&code=910100‘서머타임’ 내년 4월 도입 검토
http://news.khan.co.kr/kh_news/khan_art_view.html?artid=200907281914531&code=920100http://newslibrary.naver.com/viewer/index.nhn?articleId=1988050600209209013&editNo=2&printCount=1&publishDate=1988-05-06&officeId=00020&pageNo=9&printNo=20488&publishType=00020
http://newslibrary.naver.com/viewer/index.nhn?articleId=1988050600209209013&editNo=2&printCount=1&publishDate=1988-05-06&officeId=00020&pageNo=9&printNo=20488&publishType=00020EU seeks to scrap seasonal clock changes in 2019
https://www.reuters.com/article/us-eu-time/eu-seeks-to-scrap-seasonal-clock-changes-in-2019-idUSKCN1LU1O4
북미
Daylight Saving Time - When do we change our clocks?
http://webexhibits.org/daylightsaving/b.html