You can find out more about the IGDC here - https://indiagdc.com/2019/ This will be the 11th year.
BYOG is an annual jam and has concluded for this year; the next one will be around the same time next year.
The next big jam a lot of us are hosting in different cities in India will be the Global Game Jam in January 2020. Find more info on cities here - http://bit.ly/GGJIndia20