What you can write to us about

When reporting a bug, please include

  1. The page address (URL) and the tool you used.
  2. The data you entered (for example Gregorian date, birth hour, gender). Only the date and time are needed to reproduce a bug; please do not send your name, ID number or sensitive details.
  3. The result you saw and the result you believe is correct, with a source (for example "printed Vietnamese almanac for year …").
  4. Browser and device (for display problems).

We only read what you send and use your email address only to reply. We do not perform rituals, charms or fortune-telling on request by email.

See also: Methodology · About.

Last updated: 2026-10-15