Global WordPress Translation Day is 1 full day dedicated to bringing WordPress to more people around the world. 24 hours of live training sessions on WordPress i18n & L10n.
So what happens on this day and how can you contribute to WordPress through translation? Read more here https://make.wordpress.org/polyglots/
In short, as one of our members put it "You would be translating strings in the language you are most comfortable and a moderator would approve them."
Find your language here: https://translate.wordpress.org/
How is this useful and important? You're enabling many native speakers who don't know English to be able to access and use WordPress.
Bangalore is on the map, so come join us and contribute to WordPress