Days begin to be longer as PH approach dry season after vernal equinox

Published March 19, 2019, 4:10 PM

by Francine Ciasico

By Ellalyn De Vera-Ruiz 

The days will begin to last longer and nights get shorter after Thursday’s vernal equinox, or the day that daylight and darkness are almost of equal length.

RESTORING BAY’S BEAUTY – Manila Bay, world-famous for its breathtaking sunset, will undergo a massive clean-up and establishments polluting its waters could face closure. (Czar Dancel/ MANILA BULLETIN)
(Czar Dancel/ MANILA BULLETIN FILE PHOTO)

According to the Philippine Atmospheric, Geophysical and Astronomical Services Administration (PAGASA), vernal equinox is an astronomical event that marks the beginning of spring in the northern hemisphere and autumn in the southern hemisphere.

On the day of the equinox, PAGASA said night and day are about the same length in both hemispheres.

Every year, equal lengths of day and night happen twice a year during the vernal and autumnal equinox, on March and September, respectively.

In the Philippines, days following the vernal equinox mark longer daytime and shorter nighttime.

It will also begin to feel more like summer due to longer exposure under the sun.

PAGASA has yet to officially declare the onset of dry season this year. Last year, it was declared on April 10.

The northeast monsoon or “amihan” is gradually weakening and by the third or last week of March, PAGASA may declare the termination of amihan season, and the official onset of dry season in the country.

The end of amihan season follows the prevalence of weather systems associated with the warm weather, particularly the ridge of high pressure area and easterly winds.

 
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