Today i.e. 30th Jun 2016 is the last date for Call for papers for PyCon India 2016.
If you are planning to attend PyCon India (which is happening at JNU Convocation Centre, New Delhi from 23rd-25th Sept 2016), You can buy your conference tickets from here:
https://in.explara.com/e/pycon-india-2016
Thanks,
Chandan Kumar