Content and source attribution
This independent adaptation retains educational source material and adds Vietnamese translations and browser-based tools. Original author profiles refer to the original source, not the operators or reviewers of this website.
The project does not claim endorsement by the original website, named editors, or religious institutions. No additional review or professional certification is claimed for these translations.
Calendar rules, traditional interpretation, and practical advice should be distinguished when reading the results. The methodology pages explain current calculation limits.