When do I need to report to immigration for my 90-day report after arriving on an OA retirement visa?

Okay, your 90 day due date is Feb 17th <- that's 89 days from the date you entered the country (Nov 20th). You can apply from 15 days before down until 7 days after so any time from 3rd of Feb to the 24th of Feb without any problem.

And on that note we're done.

90 days +- 7 days.

Example - Krabi Immigration is NOT hard core about a lot of things but they do expect people to report just after they arrive in Thailand for Visas such as the non Imm O-A.. My neighbor is on an O-A visa and I went with her.. They explained the local policy - put her details in the computer system and gave her a slip of paper with her 90 day report date.. Nothing punative just matter of fact and the I/O was very professional about it

Depending on where you reside in Thailand and the Immigration office you report to - consider this... you may be required to report to Immigration within 24 hours of your arrival in Thailand. Also the best thing to do is report to Thai Immigration asap anyway.. They will register you as being here, they may substantiate your address here and set your 90 day report date (which should be 90 days from the date of your arrival in Thailand - when you were stamped in

Feb 17 would be your next 90 day report date

I would suggest 90 days for a 90day report

There really isn’t enough information in your question to provide an adequate answer. Does your current residence match the information on your arrival card? Has your address changed? From one province to another? What province are you in now? Are you asking about the 90-day reporting or... what?