hours, 46 minutes and 34 seconds with respect to GMT, as UTC did not exist. In 1903, another official time was operating in Coquimbo. It was synchronized at -4 hours, 45 minutes 20.7 seconds with respect to GMT. On January 10, 1910, Chile adopted GMT-5 as its official time. On July 1, 1919, time was set as 4 hours 42 minutes 46.3 seconds behind Greenwich. Summer time (CLST/EASST) Summer time in Chile, also known as daylight saving time (DST) in Chile was used in Chile from 1968 to 2014 & 2016–present. The time zone Chile Summer Time (CLST) was used on the mainland with the offset UTC−03:00 and Easter Island Summer Time (EASST) was used on Easter Island with the offset UTC−05:00. In mainland Chile, time was changed at 24:00 on a Saturday, i.e. at 0:00 on the following Sunday. In Easter Island, time was changed at 22:00 on a Saturday. In 2015, the time offset used in this time zone eventually became the only time zone in Chile. Several exceptions have been decreed to the current rule that began in 1968: In 1987, the daylight saving time was extended until Saturday 11 April to accommodate a visit by Pope John Paul II In 1988, daylight saving time began a week early, to have more light for the Chilean national plebiscite of 5 October In 1990, daylight saving time was extended to 17 March, because Patricio Aylwin began his presidential period on 11 March In 1990, daylight saving time began at the end of 15 September, in order to save electricity due to unfavorable hydrological conditions In 1997, standard time began at the end of 29 March, in order to cope with unfavorable hydrological conditions In 1999, daylight saving time was extended to the first Saturday of April, due to a severe drought In 2008, daylight saving time was extended 3 weeks, due to a severe drought Due to the 2010 Chile earthquake, daylight saving time ended at 0:00 of 4 April on Continental Chile (20:00 Saturday 3rd on Easter Island) In 2011, the government decided to end daylight saving on the first Saturday of April. Later this was postponed to the first Saturday of May. On February 15, 2013, DST was extended to the last Sunday of April and started DST on the 2nd Sunday of September. These dates would be nearly the exact dates of North America's DST,