code: function toGregorian(oBuddhist) {
  		var iEraStartYear = UniversalDate.getEraStartDate(CalendarType.Buddhist, 0).year,
  			iYear = oBuddhist.year + iEraStartYear - 1;
  		// Before 1941 new year started on 1st of April
  		if (iYear < 1941 && oBuddhist.month < 3) {
  			iYear += 1;
  		}
  		if (oBuddhist.year === null) {
  			iYear = undefined;
  		}
  		return {
  			year: iYear,
  			month: oBuddhist.month,
  			day: oBuddhist.day
  		};
  	}
docs: Calculate gregorian year from Buddhist year and month
  
  @param {object} oBuddhist
  @return {int}