Also called the cold moon, the solar spectacle occurs when a full moon coincides with the moon reaching the point in its orbit where it is closest to the earth. A full moon at perigee will look up to 14 percent bigger and 30 percent brighter than a full moon at apogee.
It's worth noting that a supermoon technically occurs during a new moon, too, but that phenomenon usually isn't referred to as a supermoon since new moons are not visible in the night sky.
The full moon on Sunday night will be a supermoon and will be bigger and brighter than usual.
Earlier in November previous year, PMD announced sighting of a full moon in the country that was 14% bigger and 30% brighter than the normal full moon because of its closest distance from the earth. The moon will not come this close to the earth again until 2034.
The moon makes an elliptical orbit around Earth once every 27 days, while a full moon happens once every 29.5 days. The next supermoon will occur just after the new year on January 2.
Just to be clear, the supermoon is only the moon-there will be no eclipse and no colors.
How can I see the supermoon?
A Blue Moon refers to the second full moon in a calendar month - which is rare, since full moons occur every 29.5 days, according to NASA.
Going to miss Sunday's supermoon?
An image of the moon taken by NASA's Lunar Reconnaissance Orbiter is shown in two halves to illustrate the difference between the apparent size of a supermoon (left) and a "micromoon" (right). After that, there will be supermoons on January 2 and January 31, 2018.