js获取某一年某个节气日期

var  solarTerm  =  new  Array("小寒","大寒","立春","雨水","惊蛰","春分","清明","谷雨","立夏","小满","芒种","夏至","小暑","大暑","立秋","处暑","白露","秋分","寒露","霜降","立冬","小雪","大雪","冬至")

var  sTermInfo  =  new  Array(0,21208,42467,63836,85337,107014,128867,150921,173149,195551,218072,240693,263343

,285989,308563,331033,353350,375494,397447,419210,440795,462224,483532,504758)

 

////===== 某年的第n个节气为几日(从0小寒起算)

function sTermDate(y,n) {

   return new Date( ( 31556925974.7*(y-1900) + sTermInfo[n]*60000  ) + Date.UTC(1900,0,6,2,5) );

}

 

//获取2013年第一个节气小寒的公历日期

var sterm = sTermDate(2013,0);

var stdateStr = sterm.getFullYear()+"-"+(sterm.getMonth()+1)+"-"+sterm.getUTCDate();