Roughly 13–14 times each century, Mercury passes directly in front of the Sun, casting a small black silhouette in front of the solar disk for a few hours. Such a transit will occur on 11 November 2019, lasting from 18:04 until 23:33 IST.
 
Between those times, the transit will be visible from anywhere on Earth, providing the Sun is above the horizon.
 
How to watch?
Because of Mercury’s size it is not possible to observe and photograph the transit without the use of a telescope or long camera lens with special solar filters fixed in order to observe the Sun safely and avoid damaging your equipment.
 
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