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◆ ANCSIZE
◆ gen_time_string()
◆ isleap()
◆ jdate()
int jdate |
( |
int32_t |
julianDay, |
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int32_t * |
year, |
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int32_t * |
dayOfYear |
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) |
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Takes in a julian day and mutates year
and doy
to contain the gregorian year and day of that gregorian year of that julian day.
- Parameters
-
julianDay | The Julian day to be converted |
year | Out-parameter indicating the gregorian year that julianDay is in |
dayOfYear | Out-parameter indicating the number of days into the gregorian year that julianDay is. |
Definition at line 13 of file jdate.c.
◆ jday()
int32_t jday |
( |
int16_t |
year, |
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int16_t |
month, |
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int16_t |
day |
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) |
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Converts a calendar date to the corresponding Julian day starting at noon on the calendar date. Originally implemented by Frederick S. Patt, GSC, November 4 1992. [Van] Flandern and Pulkkinen, Ap. J. Supplement Series 41, November 1979, p. 400.
- Parameters
-
year | 4-digit year |
month | 1-12 |
day | 1-31 |
- Returns
- The astronomical Julian day corresponding to the one starting at noon on the calendar day
Definition at line 14 of file jday.c.