Seed Buddhist Year will change output year to Buddhist year or Buddhist Era (BE) but not effect microformat, which uses Christian/Common Era (CE).
Just install and it will overide these functions,
- get_the_date()
- the_date()
- get_the_time()
- the_time()
Then, this plugin will not work if your theme user other standard ways to output the date and time.
Official development of Seed Buddhist Year is on GitHub, with official stable releases published on WordPress.org. The GitHub repo can be found at https://github.com/SeedThemes/seed-buddhist-year/. Please use the Support tab for potential bugs, issues, or enhancement ideas.