We are 11 hours ahead of all the matches except for two venues - Cuiaba and Manaus, where we are 12 hours ahead...
So, if matchtimes start at 1300hrs (Brazil local time), just add 11 hours which is 2400hrs....that's 12 midnite on that day for us.
If match starts at 1600hrs (Brazil local time), just add 11 hours which is 27hours...which is 3am the next day for us.
Similarly for the 12 hours additions for Cuiaba and Manaus...
It's aptly called gila bola...!
"The world we have created is a product of our thinking. It cannot be changed without changing our thinking." - Albert Einstein