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Solar Eclipse of June 10, 2021

A solar eclipse occurred on June 10, 2021. In this special section dedicated to the event, you’ll learn about eclipses in general and the local circumstances of this particular eclipse, and you’ll find suggestions for safe viewing methods. Click on through the following sections!

Umbra, penumbra and antumbra (diagram)

What is a Solar Eclipse?

Put simply, a solar eclipse is a shadow play between three actors: the Sun, the Moon, and the Earth. Illuminated by the Sun, the Moon casts a shadow out into space: a long, thin, pointed cone called the umbra. This umbral cone is surrounded by the penumbra. Inside the umbra, the Sun is completely hidden; in the penumbra, it is only partly blocked out.
Frequency of Eclipses (texture)

Frequency of solar eclipses

Solar eclipses are arguably the most impressive astronomical phenomena one can observe. But how often do they occur? The answer depends on your location!

Get ready for the June 10, 2021 Solar Eclipse!

20210610 eclipse map Canada

The June 10, 2021 Solar Eclipse

The solar eclipse that takes place on Thursday, June 10, 2021, will be annular in a 500+-km-wide path stretching from Northern Ontario and Northwestern Québec all the way to Siberia, via the Canadian Arctic and the North Pole. Outside this path, the eclipse will be partial to varying degrees in Québec and most of Canada. Get ready for this remarkable event!
Annular eclipse steps

Local circumstances of the solar eclipse of June 10, 2021

Key moments of the solar eclipse of June 10, 2021, for more than a hundred localities in Quebec and elsewhere in Canada, presented as tables indicating the local time of contacts, as well as the magnitude of the eclipse and obscuration of the Sun at the time of maximum.
Observing the Sun

How to safely observe the Sun

Never look directly at the Sun. Always use a proper solar filter. The Sun's intense radiation (visible light, ultraviolet and infrared) always presents a serious danger to the eye, especially to the central part of the retina known as the macula.

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