Daylight saving time in Colombia
From February 1992 until March 1993, Colombia suffered rolling blackouts of up to 10 hours a day due to a particularly strong El Niño season, which dried the reservoirs in hydroelectric plants in a country deriving 70% of its energy output from hydroelectric sources; consequently, the government decided to use DST to help save electricity. The experiment failed to deliver the intended results, possibly due to Colombia's low latitude, and the DST experiment was discontinued.
- "Time zone changes and daylight saving time start/end dates between year 1990 and 1999 - Bogota, Colombia". timeanddate.com. Retrieved 2008-05-09.