There is a solar eclipse on April 20th and it is known as a hybrid eclipse because it will shift from a total eclipse to an annular solar eclipse as the moon’s shadow moves over Earth. For some locations in the solar eclipse’s path on the world, viewers will witness a total solar eclipse, whereas in other parts, they’ll witness a ring-like annular solar eclipse. In both cases, the moon will pass between the Earth and the sun, blocking out all or most of the sun’s light falling on the Earth’s surface. Since the Moon’s orbit around the Earth is elliptical the Moon’s distance from the Earth can vary by about 6% from its average value. Therefore, the Moon’s apparent size varies with its distance from the Earth, and it is this effect that leads to the transition between total and annular eclipses.

Unfortunately, this eclipse is not visible to Sri Lanka as well as many parts of the world. However, the eclipse is visible for a few regions in Western Australia, East Timor, and the eastern Indonesian islands, and viewers in those counties get ready to see the show of a lifetime.

The eclipse is visible only to 8.77% of the world’s population. In Sri Lanka Standard Time, the eclipse will begin in the Indian Ocean at 7.04 a.m. and end at 12.29 p.m. over the Pacific Ocean on April 20.

 There are just two locations on Earth that will be able to witness the eclipse transition from annular to total before transitioning back to annular again. However, these locations are unfortunately in the middle of the ocean.

 Hybrid eclipses are very rare. The last hybrid eclipse occurred nearly 10 years ago, on Nov. 3, 2013, and the next hybrid solar eclipse will occur in November 2031.

 Though this eclipse is not visible to Sri Lanka, it can be observed live through several websites said Prof. Chandana Jayaratne, Director, of the Astronomy and Space Science Unit, Department of Physics, University of Colombo.


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