day — Date | CodeCogs

Extracts the day from a serial Julian date. <span align="right" style="background-color:99FF99"><strong>Excel: DAY</strong></span>

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Interface

#include <codecogs/units/date/day.h>

using namespace Units::Date;

inline int day(int nDate, calendar dateSystem=cal_Gregorian)

Returns the day of the month contained within nDate, as an integer ranging from 1 to 31 (inclusive).

Example 1

#include <stdio.h>
#include <codecogs/units/date/day.h>
using namespace Units::Date;

int main()
{
  printf("\n The day is %d", day(1741667));              // The day is 2
  printf("\n The day is %d", day(1741667, cal_Julian));  // The day is 4
  return 0;
}

Parameters

nDate

is a serial number of days from 24 November 4714 BC (1 January 4713BC in the Julian Calendar) - also known as the Julian Period.

dateSystem

selects which date system should be used (see constants):

Blank

cal_Gregorian (default)
cal_Julian
cal_Excel (same as Gregorian)

It may be faster to simply use dateYMD if you also need the year and month from the same serial Julian date.