Accurate Times

The Accurate Times application is a well-known application amongst the astronomers, this software is made by Mohammad Syawkat Audah. In this application there are several calculation programs, such as the program of Salat Time, Moon and Moon Setting program, Moon Phase, Hilal Visibility, Sun Ephemeris program, Hijriah-Masehi (Lunar-Sun) Calendar, Qibla Direction and also Solar and Moon position guidance program for telescope operation.

This application was originally a prayer time application adopted by the Jordanian Ministry of Religious Affairs for the early determination of the prayer time in Jordan, but at a later stage it developed to the point of calculating the conversion of the Hijriah-Mashi-Hijri date and the determination of the beginning of the continuing month on the visibility of the new moon .

The front view of the Accurate Times application

One of these in-app programs that reflects his thoughts is the Crescent Visibility or Visibility Hilal program the author has described in the previous chapter.

Crescent Visibility program display in the Accurate Times application

In this program provided several options for the determination of criteria:
- Waxing / Waning Crescent
This option is used to select the object we will look for visibility, whether young moon or old moon.
- Calculations
This option is used to select the basic reference of calculation, whether the calculation based on the geosentric point that will produce the essential moon, or from the surface of the earth (Toposentric) that will produce the hilal mar'i.
- Day of Calculations
This option is used to determine the state of visibility, at day of intent, 1 day or 2 days after.
- Time of Calculations
This option is used to select the visibility reference time, at sunset, when the Moon is set, or when the Best time, which is one of Mohammad Odeh's formulas also that the author has described in the previous discussion.

Map of Hilal Accurate Times Visibility

The above picture is the moon visibility map of the Beginning Moon of Shawwal 1438 in the Accurate Times application with youthful hilal, topocentric hilal, hilal on the day of ijtimak and hilal at best time.

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