Vernal Equinox: The Science Behind the First Day of Spring 2019

Vernal Equinox: The Science Behind the First Day of Spring 2019

During a supermoon, the moon can appear bigger and brighter than normal, because the moon is in its closest proximity to earth.

February's full moon - a snow moon - was also a supermoon, while January's full moon - a "wolf moon" - was not only a supermoon, but also boasted a lunar eclipse. March 20, 2019 marks the spring equinox - the first official day of spring in the Northern Hemisphere.

Wednesday marked a long-awaited beginning to the spring season for many in the Northern Hemisphere. In Canada, it is called the Full Sap Moon as it is during this time that sap of the sugar maple tree starts to flow.

PAGASA said the phenomenon will be seen clearly as the weather is expected to be fair.

If you want to avoid the possibility of clouds interfering with your view Wednesday evening in Washington, Tuesday night's moon is pretty close to full at 96 percent or greater illumination. Both these days witness equal day and night timings - both the days when the sun is directly above the equator.

Also on Wednesday night, we will see the Full Worm Moon, which is the first Equinox Full Moon we've had since the year 2000, and the last one until the year 2038.

The equinox would be at 3:28 am (IST) on March 21, less than four hours before the supermoon arrives.

This full moon is called a worm moon because in cold climates the ground begins to thaw and earthworms appear.

Ordinarily, the average distance between the moon and the Earth is about 383,000km, but at its peak the Worm Moon will about 359,000km away.

The last super moon of the year is nearly here!

Closer home, remember Ugadi, Bihu, Puttandu, Vishu, Noboborsho and other new years celebrated in India? While the spring equinox occurs in the Northern Hemisphere, the autumnal equinox is occurring in the Southern Hemisphere. The equinox, which is the moment the sun's rays are shining directly on the equator, will take place at 5:58 pm ET.

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