Date Planning

Enter dates, weekdays, availability and deadlines in Beijing time (UTC+8). Overseas users must convert their local arrangements. Calendar files retain the same instant, which your calendar app may display in its local time zone.

The engine supports 2026 to 2030 and searches of 1 to 60 days, including the start date. Deadlines and the supported year range clip the search. Past dates and elapsed time slots are excluded from new arrangements.

Practical availability is mandatory. Other activities also apply their selected traditional preferences. Medical visits, health checks, financial advice appointments and exam preparation use availability only, without traditional or zodiac ranking.

Traditional candidates use day officers, year/month breaks, seasonal transitions, activity taboos and optional zodiac clash exclusions. A preferred officer adds 2; the deity and mansion each add 1 or subtract 1; each participant's six-harm relation subtracts 1. The threshold is 2. Ties use earlier dates. Scores are not probabilities of success.

For traditionally ranked activities, time segments intersect availability with preferred double-hours and exclude clashes with the day or participants. Each segment must fit the full duration. The two midnight segments are kept separate; adjacent segments are not merged into a booking.

Birth dates supply year-branch preferences using Li Chun, not a full Four Pillars analysis. On the Li Chun date, both possible branches are considered because no birth time is supplied. Without birth dates, participant clash screening has not been performed.

Activities may share rules; each label is not a separate algorithm. Calendar data comes from lunar-javascript 1.6.12. This page calculates locally without automatically uploading inputs. Local records require an explicit save; use shared devices with care.

Public holidays, weather, venue availability, opening hours and booking systems are not connected. Actual deadlines, confirmed appointments, medical needs and safety requirements take priority. No traditional candidate does not mean an arrangement is impossible.