The last supermoon of the year will fall on the spring equinox, an occurrence that won't happen again till 2030. Known as the super worm equinox moon, the cosmic phenomenon can be seen in India at 7.12 am on March 21.
The supermoon on March 21 will be the last one in 2019, which has already seen two supermoons in January and February. When the moon is at its closest point to the Earth, it is called perigee. A supermoon occurs when the Earth's natural satellite at its full phase during the perigee. The moon appears brighter and larger during a supermoon.
According to EarthSky.org, a full moon has not come this close to the spring equinox since 19 years. The last such occurrence was in March 2000.
An equinox marks the time when sun's rays fall directly on the equator and the length of the day and night are equal. The Earth is usually tilted on its axis, but during the equinox―in March and September―it is neither towards the sun nor away. The equinox falling in March marks the beginning of spring in the northern hemisphere and the September equinox marks the beginning of autumn in the southern hemisphere.
A full moon during the equinox is also known as super worm moon because during this time, earthworms emerge from the soil because of the increasing heat.
