@Donald *********
The mentioning of „not more than 180 days within a 365-days period“ still gets mentioned on some Thai embassies and consulates websites.
However, embassies are subsidies of the Thai Ministry of Foreign Affairs, whilst Thai Immigration is a subsidy of the Ministry of Interior.
These different ministries interpret the rules differently.
An Immigration officer is has the right to use his own discretion and can actually allow you enter, even if you have already spent more than 180 days within the recent one-year period