My birthday is April, meaning on my first year birthday, it was 12 months already pass. Next day, would be 1 year + 1 day.

So when I am 32 years old, it was 2015 April (Like your patent, or my equation)

When I am 34, I declare King of King statues in June, but April was my birthday

35 ( 34 April to April 15th midnight 12 oclock 59 mins to 59 second, adding one more second, I am 35, exactly 35 years pass.) 2018

36 2019

37