I can't tell you that because I don't no if it starts on day 1 of entry or Jan 1st .the real rules must be in the Thai website so good luck on the answer
it's easy to understand.when you come in you get 60 days at first .you can buy another 30 days to make it 90 days .now the next time you want to extend is the bit what's gunna hit people is they only give you 7 days to sort your self out .and that's it .that's what issan lawyers man said .