The Buddhist Era (B.E.) began 543 years before the Christian Era (A.D.). See Thai solar calendar on Wikipedia.
Notice how the pronunciation changes when you say the two words together, compared to the two words separately.
The Thai translation for “Buddhist Era” is พุทธศักราช
. The Thai, พุทธศักราช
, can be broken down into 2 parts:"Buddhist (when followed by another word)" (พุทธ)
and "era" (ศักราช)