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
Values
0
Gregorian - abbreviated
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
1
Gregorian
January, February, March, April, May, June, July, August, September, October, November, December
2
Julian - abbreviated
Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
3
Julian
January, February, March, April, May, June, July, August, September, October, November, December
