It happens when Earth casts its shadow onto the lunar surface as it passes between the sun and moon.
"The moon is always in flawless line with the Sun and the Earth, so we don't get a lunar Eclipse in every lunar cycle, said brad Tucker, an astronomer at the Research school of astronomy and astrophysics at the Australian national University".
"The beginning of the phase of total eclipse will be visible only in the east of a diagonal line that links Bordeaux, Paris and Lille", said the site Sciences et Avenir.
This is the fourth lunar eclipse this year, but it's the last one until 2021 viewable from Australia.
This time around, the eclipse will occur when the moon is furthest from the earth, making it a micro-moon and thus a blood micro moon eclipse.
The eclipse will be visible across much of the world, but not in North America.
If you're planning to watch it online it begins at 1:14 p.m. ET, and maximum totality, or the blood moon, begins at 04:21 p.m. ET.
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A total lunar eclipse occurs when the moon and the sun are on exact opposite sides of Earth.
"The blue light as it passes through the atmosphere is scattered more strongly, so you're left with the red light skimming over the Earth when the Earth is between the moon and the sun". In Europe and Africa, the phenomenon will take place in the evening hours, sometime between sunset and midnight on July 27.
But don't worry, even if you don't manage to find a ideal spot, you'll still be able to get a good view of the red moon as it rises in the sky.
"India is at the centre stage of the lunar eclipse". However, Indians won't be fortunate in light of the continuous rainstorm season in the nation which may make the moon be eclipse from seeing.
The live stream, which you can find here, will kick off on the night of the eclipse at 7.30pm BST (6.30pm UTC). This eclipse will also be the longest eclipse we have had this century! The last time Mars was bigger and brighter than this was in 2003, when it was less than 56 million kilometres away from Earth.
According to the National Aeronautics and Space Administration (NASA), the lunar eclipse will begin in the wee hours of July 28 morning.
The world witnessed another super lunar eclipse in January this year.
In France, the observers of the sky will be able to contemplate the second part of this eclipse. In one of the sky's wonderful coincidences, the Mars opposition happens on July 27 too.