string jdmonthname (int julianday, int mode)
Returns a string containing a month name. mode tells this function which calendar to convert the Julian Day Count to, and what type of month names are to be returned.
Table 1. Calendar modes
| Mode | Meaning | 
|---|---|
| 0 | Gregorian - abbreviated | 
| 1 | Gregorian | 
| 2 | Julian - abbreviated | 
| 3 | Julian | 
| 4 | Jewish | 
| 5 | French Republican |