On April 20, 2023, a special hybrid solar eclipse will take place. But unfortunately, most people in the world will not be able to observe this phenomenon. In Vietnam, we also only see a relatively faint partial eclipse.
What is a hybrid eclipse?
Let’s talk about solar eclipses first. Simply put, this phenomenon occurs when the Moon sits between the Earth and the Sun, blocking some of the Sun’s light to our Earth. Then the shadow of the Moon will fall on the Earth.
In regions where the Moon’s shadow passes, people will observe that the Sun is partially covered by the Moon (partial eclipse), or completely obscured (total eclipse). Sometimes the Sun is obscured in the middle, always revealing a bright outer ring, we call this an annular eclipse.
Image illustrating the cause of a solar eclipse. Source: NASA
A hybrid solar eclipse is a type of “hybrid” solar eclipse between a total solar eclipse and an annular solar eclipse. When a hybrid eclipse occurs, some regions of Earth will see the full phase, others will see the annular phase (and, of course, others will only see the partial phase).
Will Vietnam be able to observe the solar eclipse on April 20, 2023?
The chart provides information about the April 20, 2023 solar eclipse from NASA.
This eclipse will begin in the southern Indian Ocean, sweep across Australia, Southeast Asia, and end in the Pacific Ocean. Unfortunately, the visible area of annular and total solar eclipses is very narrow, mainly the sea.
In Vietnam, the partial phase can be observed. The visible area is the southern provinces, from Quang Tri to the south.
On the mainland, the most favorable provinces are Ninh Thuan and Binh Thuan. But even here the occlusion is only 8% (i.e. the Sun is only 8% obscured). This figure in Ho Chi Minh City is 5%.
At sea, for the Truong Sa archipelago of Khanh Hoa, coverage reaches around 20% (depending on the islands). As for the Hoang Sa archipelago of Da Nang, the coverage is around 5%.
Find your local eclipse information here
The details of the eclipse times are as follows:
|Event||UTC time||vietnam time|
|First place in the world to witness a partial infusion||04/20, 01:34:26||04/20, 08:34:26|
|First place in the world to start seeing a full brew||04/20, 02:37:08||04/20, 09:37:08|
|Solar eclipse||04/20, 04:16:53||20/04, 11:16:53|
|The last place in the world where a total solar eclipse ended||04/20, 05:56:43||20/04, 12:56:43|
|The last place in the world to see the end of a partial eclipse||04/20, 06:59:22||20/04, 13:59:22|
When will Vietnam see the solar eclipse again?
From left to right: total solar eclipse, annular eclipse, partial eclipse. Author: NASA/MSFC/Joseph Matus; NASA/Bill Dunford; NASA/Bill Ingalls
After this eclipse, it will be necessary to wait until August 2, 2027, for a new solar eclipse to take place in Vietnam. But…again but again, the occlusion isn’t much better than this time.
Almost a year later, on July 22, 2028, we were greeted by a remarkable partial solar eclipse, when some spots reached 33% occlusion.
(Refer to information from Space.com, Timeanddate.com)