: Return the date in the calendar and format of the specified 'options'
Function
: persianToCalendars(year, month, day, [options])
Purpose
: Converts Persian/Iranian Date (Jalali Date) to the corresponding Gregorian Date.
Handles Persian dates from -272,442 AP to +275,139 AP.
Uses the 'JS Calendar Conversion by Target Approximation' Method.
No external libraries or complex mathematical/astronautical formulas.