3 Months Residence Reporting - How It Work?

[TedK.]

I have 1 year retirement visa. My next 3-months reportng is set on Aug. 12th, but I'll be out of Thailand for 2 months - from July 15 till Sep. 15th When should I report than? Do I have to inform Immigation Office that I can not make report as schaduled because I'll be abroad?

[lopburi3]

You should report 89 days after your return (return is day one). You never have to report if you are not here so no need to inform anyone.