If the chronological designation includes dates not of theGregorian or Julian calendar, add the corresponding dates
of the Gregorian or Julian calendar in square brackets.
 
Thus, a MONTH name given in the brackets should be given in  the language of the piece--that is, "Rajab 1395" on the
piece is "Yuliyu 1975" in the brackets, not "July 1975" or any other variant.

If the month-name on the piece matches up to more than one Gregorian  month-name, give both in the language of the piece.