만세력 TAU — 진태양시 절기 달력

TAU is a calendar that handles 'hours' with precision.

■ Calculation of Perfect True Solar Time

· When you select a birthplace (city/province, city/county/district), it corrects down to the minute using the detailed longitude value of that region (e.g., Jongno, Seoul, approx. -32 minutes).

· It establishes the Hour Pillar based on perfect True Solar Time by reflecting the solar meridian deviation according to the season (equation of time, approx. -14 minutes to +16 minutes annually).

· This is particularly important for those born near Hour Pillar boundaries (in 2-hour increments) or around 23:00.

■ High-Precision Seasonal Terms

· It calculates seasonal times using an astronomical algorithm (VSOP87 Apparent Solar Longitude + ΔT correction) to establish an accurate Month Pillar even for those born near the start of a season.

■ Selection of Theory for Births at the Hour of the Rat

· For those born at 23:00, you can choose between the "Rat-Start-Return-Sun" Theory (default) and the "Separation Theory of Night Hour and Morning Hour." The basis for each theory is specified in the help section. ■ Natal Chart Analysis

· 8-Character Natal Chart · Ten Stars · Twelve Stages of Life · Hidden Stems · Divine Killings · Void

· 11 Tabs for Formation, Conflict, and Combination (Heavenly Stem Combination, Heavenly Stem Conflict, Earthly Branch Six Combinations, Three Combinations, Four Combinations, Earthly Branch Conflict, Formation, Breaking, Harm, Disharmony, Void) — Instantly check the relationship between characters in the 8-character grid

· Five Elements Distribution (Including Natal Chart / Hidden Stems)

■ Flow of Fortune

· A single flow from Grand Cycle → Annual Cycle → Monthly Cycle → Daily Cycle, all the way to the calendar

· Precise calculation of Transition Cycles (Grand Cycle Numbers)

■ AI Export — Copy Calendar Data

· You can copy verified natal chart data and paste it into generative AI (ChatGPT, Gemini, Claude, etc.) for use.

■ Privacy Security

· All calculations are performed on the device, and entered or saved natal charts are not transmitted to external servers.

· All functions operate even offline. · Saved List · Search · Backup (JSON Export/Import)

■ Recommended for:

· Those who were troubled by differing values ​​across various almanacs due to birth dates at the hour of birth or the Hour of the Rat

· Those who wish to personally verify the basis of calculations (theories, astronomical calculations)

· Those who save and manage multiple birth charts and utilize AI export