How to Include Complete Ephemeris Parameters in Your Email
If you were born within ±20 minutes of an odd-hour Two-Hour Shichen transition (such as 23:00 Zi Hour or the February 4 Lichun Solar Term) and wish to verify how our engine computes your True Solar Time offset, please include your birth city (or longitude in decimal degrees), standard civil timezone, and whether Daylight Saving Time was in effect. You can also inspect the complete mathematical formulas anytime on our 5-Gate Astronomical Methodology page or test all 12 candidate Hour Pillars side-by-side in our Birth-Time Rectification Workstation. For academic partnerships, open-source ephemeris citations, or feedback on our 286-page classical Chinese metaphysics encyclopedia, please include the relevant page URL in the subject line so our archival editors can route your message immediately.