frenchtojd(): The julian day for the given french revolution date as an integer.
Convert a French Republican date to a Julian Day
frenchtojd() converts a French Republican Calendar date into a Julian Day count.
$jd = frenchtojd(1, 1, 10);
echo $jd;Current example first; the detailed examples and demos below are retained for additional learning and comparison.
<?Php
echo frenchtojd(12,22,12); // Output is 2380209
echo "<br>";
echo frenchtojd(13,22,2); // Output is 2376586
echo "<br>";
echo frenchtojd(14,22,3); // Output is 0
echo "<br>";
echo frenchtojd(13,22,3); // Output is 2376951
?> int frenchtojd ( int $month , int $day , int $year )| Parameter | DESCRIPTION |
|---|---|
| $year | Required : Year between 1 to 14 |
| $day | Required : between 1 to 30 |
| $month | Required : Number from 1 to 13 |
Example 1: Converting French Republican Date to Julian Day Number
This example demonstrates how to convert a French Republican calendar date into a Julian Day Number using FrenchToJD().
$jd = FrenchToJD(2, 7, 3); // Converts 7th day of 2nd month in year 3
echo "Julian Day Number: " . $jd;
Julian Day Number: 2376606
Example 2: Using FrenchToJD() and cal_from_jd() Together
This example converts a French Republican date to a Julian Day Number and then back to the Gregorian calendar.
$jd = FrenchToJD(2, 7, 3); // 7th day of 2nd month in year 3
$gregorianDate = cal_from_jd($jd, CAL_GREGORIAN);
print_r($gregorianDate);
Array ( [date] => 10/28/1794 [month] => 10 [day] => 28 [year] => 1794 [dow] => 2
[abbrevdayname] => Tue [dayname] => Tuesday [abbrevmonth] => Oct [monthname] => October )
Information about available Calendars
Calendar Functions
Subhendu Mohapatra
Author & Instructor at plus2net
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