"उन्हाळी प्रमाणवेळ" च्या विविध आवृत्यांमधील फरक

[[Image:Daylight savings time world.png|upright=1.67|thumb|

alt=World map. Europe, Russia, most of North America, parts of southern South America and southern Australia, and a few other places use DST. Most of equatorial Africa and a few other places near the equator have never used DST. The rest of the land mass is marked as formerly using DST.|