Data Entry
Information
This system computes astronomical timings by the The Creator's Calendar method, which relies on:
- The day begins at astronomical dawn (fajr).
- Determining the start of the lunar month by a specific rule: if the conjunction occurs during the day, the first day is the next day; if it occurs at night, the first day is two days later.
- Linking the lunar months to the solar seasons.
- Adding an intercalary month (“Al-Nasi”) when a single season contains four moons of the two-day age.
The reference years that can be computed range from year 1 CE to year 2999 CE.
- The reference year begins with the season of spring.
Source of the computations:
- NASA/JPL de441.bsp astronomical files, for computing the positions of the sun and moon and the fajr, sunrise, and sunset with scientific precision.
- Precise agreement with the conversion between Julian and Gregorian dates before and after 1582 CE.