TL;DR – The biggest in nearly 70 years.
In 10 days, the world will see the moon at its brightest this year, with a record-breaking Supermoon. The moon will be the closest to Earth it’s been since January 1948 and will hence appear up to 14% bigger and 30% brighter than an average full moon.
Here are some examples from 2014’s phenomenon,
What’s a Supermoon?
Basically, a Supermoon is a full moon that comes closest to Earth on its elliptical orbit, and that results in the largest size of the moon as seen from Earth.
NASA explains more in this video,
It will happen in Singapore on Monday 14 Nov 9.52pm local time, so keep a lookout for it!