The Julian Calendar is the most famous of the solar calendars. For a leap year, the factor of 2 in the 2nd term is removed.Ĭorrespondence of the decimal parts of Julian Date in hours, minutes and seconds:Ġ.1 = 2.4 hours or 144 minutes or 8640 secondsĠ.01 = 0.24 hours or 14.4 minutes or 864 secondsĠ.001 = 0.024 hours or 1.44 minutes or 86.4 secondsĠ.0001 = 0.0024 hours or 0.144 minutes or 8.64 secondsĠ.00001 = 0.00024 hours or 0.0144 minutes or 0.864 seconds. Also indicates that the full part of the number in the brackets will be taken. In this formula, M is the number of months, and I is the day of the month. The formula for finding the number N is as follows: In the formula 2415020 refers to the Julian Day corresponding to January 1, 1900, and the amount 0.5 denotes the decimal equivalent of the half day resulting from the start of the Julian Day in the middle of the day. N is the number of days after the new year, and L is the number of leap years between 1901 and the date to be calculated. Universal time is EZ = 0 in this calculation. This formula It gives the Julian Date that coincides with any date since 1990. The formula for calculating the Julian Day is as follows: The Julian Day calculation formula is used. The charts in the astronomy annals are checked. The Julian Date of any date can be found in 2 ways: The Julian Date, abbreviated as JT, is the date determined by these numbers. ![]() These numbers are indicated in the astronomy annals as charts by years, months, and days. The days that come after this date have been counted consecutively and added to this number. While each day is expressed as an integer, any hour of the day is added to this integer as a fraction of the day. Negative values can also be used, but these values invalidate any history saved. In this way, the multiples of 7 always correspond to Monday. In other words, noon was chosen as the starting time of the day. It presents the time interval of a day starting from Noon with Universal Time (UT) on Monday, January 1, 4713, in fractions of the day and the day. JULIAN DATE CALENDAR 2023 How is Julian Date Calculated?
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