The Sun Rises Early on August 13-18, Why?

In Jakarta on November 13, the sun will rise at 05.25.09 WIB.

REPUBLIKA.CO.ID, JAKARTA — The sun will rise faster if observed from Java, Bali and Nusa Tenggara. How did this happen?

Reporting from the website of the National Institute of Aeronautics and Space (LAPAN) this phenomenon is related to the sun’s declination which varies in one year. The declination is the angle formed between the equator and the ecliptic.

In addition, there is a factor that the Earth’s orbit is not a perfect circle but an ellipse with an ellipse of 1/60. This can make the interval of two successive solar transits (also called 1 solar day) not always uniform 24 hours but 23 hours, 59 minutes and 40 seconds to 24 hours 0 minutes 30 seconds. The accumulation of the difference between 1 tropical day (24 hours) and 1 solar day is then referred to as the time averaging.

In addition, the sun will rise earlier for observers in the south if true time is used. These two combinations, time rectifier and sunrise time cause the sun rises faster for the southern hemisphere, such as Java, Bali and Nusa Tenggara.

For example, in Jakarta on November 13 the sun will rise at 05.25.09 WIB. In Semarang, on November 14, it will be published at 05.09.49 WIB. In Yogyakarta on November 15 the sun will rise at 05.08.57.

In Ende, on 16 Novemver the sun will rise on 05.22.19 WITA. In Kupang, on November 18 the sun will rise on 05.12.39 WITA.

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