King and Queen

Yesterday here (2 June) we had our version of "King's Birthday" -- first Monday in June. Some media attention to Charles III (I think he's in Canada right now), useful to remind us who have lived all or most of our lives with "Queen's Birthday" that things have changed. And a big Honours List -- awards bestowed on many persons of distinction in the arts, sport, science, business, etc.
Today, by contrast, is "Queen's Birthday" in Thailand -- actual birthday of the actual reigning Queen ("former air hostess"),
Suthida Bajrasudhabimalalakshana
Thai: สมเด็จพระนางเจ้าสุทิดา พัชรสุธาพิมลลักษณ พระบรมราชินี
RTGS: Suthida Phatcharasuthaphimonlak
pronounced [sùʔ.tʰíʔ.dāː pʰát.tɕʰa.ráʔ.sùʔ.tʰāː.pʰíʔ.mōn.lák].
(That's from Wikipedia. There's a link to a sound file, but unfortunately it contains only the "Suthida" part, which is how she's commonly known.)
https://en.wikipedia.org/wiki/Suthida
The first version of her full name looks very Sanskrity (or maybe Pali-y?).
But what's RTGS? "Royal Thai General System [of Transcription]", i.e. the official way of transliterating Thai script into Roman.
https://en.wikipedia.org/wiki/Royal_Thai_General_System_of_Transcription