【转】阳历转换阴历的换算方法（经过部分修改，现在能显示得正确）
网上有一个很经典的算法，可以计算出阳历时间对应的阴历时间，据测试在春节之前的时间，但是又过了元旦，那个时间段显示不正确，对此进行了修正。在此跟大家分享。已经全部注释好了。对此算法有更高见解的达人还请多多指教！~
var lunarInfo = new Array(
0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977,
0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970,
0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950,
0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557,
0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0,
0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0,
0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,
0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570,
0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0,
0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5,
0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930,
0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530,
0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45,
0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0
);
var Animals=new Array("鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪");
var Gan=new Array("甲","乙","丙","丁","戊","己","庚","辛","壬","癸");
var Zhi=new Array("子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥");
var now = new Date();
var SY = now.getYear();
var SM = now.getMonth();
var SD = now.getDate();
function cyclical(num) { return(Gan[num%10]+Zhi[num%12]) } //==== 传入 offset 传回干支, 0=甲子
//==== 传回农历 y年的总天数
function lYearDays(y) {
var i, sum = 348
for(i=0x8000; i>0x8; i>>=1) sum += (lunarInfo[y-1900] & i)? 1: 0
return(sum+leapDays(y))
}
//==== 传回农历 y年闰月的天数
function leapDays(y) {
if(leapMonth(y)) return((lunarInfo[y-1900] & 0x10000)? 30: 29)
else return(0)
}
//==== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
function leapMonth(y) { return(lunarInfo[y-1900] & 0xf)}
//====================================== 传回农历 y年m月的总天数
function monthDays(y,m) { return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 )}
//==== 算出农历, 传入日期物件, 传回农历日期物件
// 该物件属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl
function Lunar(objDate) {
var i, leap=0, temp=0
var baseDate = new Date(1900,0,31)
var offset = (objDate - baseDate)/86400000 /*这句不懂*/
this.dayCyl = offset + 40
this.monCyl = 14
for(i=1900; i<2050 && offset>0; i++) {
temp = lYearDays(i)
offset -= temp
this.monCyl += 12
}
if(offset<0) {
offset += temp;
i--;
this.monCyl -= 12
}
this.year = i
this.yearCyl = i-1864
leap = leapMonth(i) //闰哪个月
this.isLeap = false
for(i=1; i<13 && offset>0; i++) {
//闰月
if(leap>0 && i==(leap+1) && this.isLeap==false)
{ --i; this.isLeap = true; temp = leapDays(this.year); }
else
{ temp = monthDays(this.year, i); }
//解除闰月
if(this.isLeap==true && i==(leap+1)) this.isLeap = false
offset -= temp
if(this.isLeap == false) this.monCyl ++
}
if(offset==0 && leap>0 && i==leap+1)
if(this.isLeap)
{ this.isLeap = false; }
else
{ this.isLeap = true; --i; --this.monCyl;}
if(offset<0){ offset += temp; --i; --this.monCyl; }
this.month = i
this.day = offset + 1
}
function YYMMDD(){
var cl = '<font color="green" STYLE="font-size:13pt;">';
if (now.getDay() == 0) cl = '<font color="#c00000" STYLE="font-size:13pt;">';
if (now.getDay() == 6) cl = '<font color="green" STYLE="font-size:13pt;">';
return(cl+SY+'年'+(SM+1)+'月'+'</font>');
}
function weekday(){
var day = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var cl = '<font color="green" STYLE="font-size:9pt;">';
if (now.getDay() == 0) cl = '<font color="green" STYLE="font-size:9pt;">';
if (now.getDay() == 6) cl = '<font color="red" STYLE="font-size:9pt;">';
return(cl+ day[now.getDay()]+ '</font>');
}
//==== 中文日期
function cDay(m,d){
var nStr1 = new Array('日','一','二','三','四','五','六','七','八','九','十');
var nStr2 = new Array('初','十','廿','卅',' ');
var s;
if (m>10){s = '十'+nStr1[m-10]} else {s = nStr1[m]} s += '月'
switch (d) {
case 10:s += '初十'; break;
case 20:s += '二十'; break;
case 30:s += '三十'; break;
default:s += nStr2[Math.floor(d/10)]; s += nStr1[d%10];
}
return(s);
}
function solarDay1(){ /*计算阳历转换成阴历的干支月份和日期*/
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var cl = '<font color="#9933CC" STYLE="font-size:9pt;">';
/*Edit by 郭垠 2011-01-17这一部分是在原来的基础上添加了判断。基本的原则就是阳历跟阴历的天数相差不超过一个月，最大值和最小值相差31天，因此阳历和阴历各自浮动2个月，来判断正确的年份*/
var Y_CN;
if (SM <= 2 && lDObj.month>=11) {
Y_CN = Animals[(SY - 4) % 12 - 1];
}
else {
Y_CN = Animals[(SY - 4) % 12];
}
var tt = '【' + Y_CN + '】' + cyclical(lDObj.monCyl) + '月 ' + cyclical(lDObj.dayCyl++) + '日';
/*Edit end*/
return(cl+tt+'</font>');
}
function solarDay2() { /*计算阳历转换成阴历的月份和日期*/
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var cl = '<font color="green" STYLE="font-size:9pt;">';
//农历BB'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日
/*Edit by 郭垠 2011-01-17这一部分是在原来的基础上添加了判断。基本的原则就是阳历跟阴历的天数相差不超过一个月，最大值和最小值相差31天，因此阳历和阴历各自浮动2个月，来判断正确的年份*/
var Y_CN_Animal;
if (SM <= 2 && lDObj.month>=11) {
Y_CN_Animal = cyclical(SY - 1900 + 36 - 1);
}
else {
Y_CN_Animal = cyclical(SY - 1900 + 36);
}
/*Edit end*/
var tt = Y_CN_Animal + '年 ' + cDay(lDObj.month, lDObj.day);
return(cl+tt+'</font>');
}
function solarDay3(){
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)
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 lFtv = new Array("0101*春节","0115 元宵节","0505 端午节","0707 七夕情人节","0715 中元节","0815 中秋节","0909 重阳节","1208 腊八节","1224 小年","1230*除夕")
var sFtv = new Array("0101*元旦","0214 情人节","0308 妇女节","0309 偶今天又长一岁拉","0312 植树节","0315 消费者权益日","0401 愚人节","0418 MM的生日","0501 劳动节","0504 青年节","0512 护士节","0601 儿童节","0701 建党节 香港回归纪念","0801 建军节","0808 父亲节","0909 毛席逝世纪念","0910 教师节","0928 孔子诞辰","1001*国庆节",
"1006 老人节","1024 联合国日","1112 孙中山诞辰","1220 澳门回归纪念","1225 圣诞节","1226 毛席诞辰")
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var lDPOS = new Array(3)
var festival='',solarTerms='',solarFestival='',lunarFestival='',tmp1,tmp2;
//农历节日
for(i in lFtv)
if(lFtv[i].match(/^(\d{2})(.{2})([\s\*])(.+)$/)) {
tmp1=Number(RegExp.$1)-lDObj.month
tmp2 = Number(RegExp.$2) - lDObj.day
if (tmp1 == 0 && tmp2 == 0) lunarFestival = RegExp.$4;
}
//国历节日
for(i in sFtv)
if(sFtv[i].match(/^(\d{2})(\d{2})([\s\*])(.+)$/)){
tmp1=Number(RegExp.$1)-(SM+1)
tmp2=Number(RegExp.$2)-SD
if(tmp1==0 && tmp2==0) solarFestival = RegExp.$4
}
//节气
tmp1 = new Date((31556925974.7*(SY-1900)+sTermInfo[SM*2+1]*60000)+Date.UTC(1900,0,6,2,5))
tmp2 = tmp1.getUTCDate()
if (tmp2==SD) solarTerms = solarTerm[SM*2+1]
tmp1 = new Date((31556925974.7*(SY-1900)+sTermInfo[SM*2]*60000)+Date.UTC(1900,0,6,2,5))
tmp2= tmp1.getUTCDate()
if (tmp2==SD) solarTerms = solarTerm[SM*2]
if(solarTerms == '' && solarFestival == '' && lunarFestival == '')
festival = '';
else
festival = '<TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 BGCOLOR="#CCFFCC"><TR><TD align=center><marquee direction=left scrolldelay=120 behavior=alternate>'+
'<FONT COLOR="#FF33FF" STYLE="font-size:9pt;"><b>'+solarTerms + ' ' + solarFestival + ' ' + lunarFestival+'</b></FONT></marquee></TD>'+
'</TR></TABLE>';
var cl = '<font color="green" STYLE="font-size:9pt;">';
return(cl+festival+'</font>');
}
//显示当前时间
function CurentTime()
{
var now = new Date();
var hh = now.getHours();
var mm = now.getMinutes();
var ss = now.getTime() % 60000;
ss = (ss - (ss % 1000)) / 1000;
var clock = hh+':';
if (mm < 10) clock += '0';
clock += mm+':';
if (ss < 10) clock += '0';
clock += ss;
return(clock);
}
function refreshCalendarClock() //
{
document.all.ClockTime.innerHTML = CurentTime();
}
//显示当前时间
function setCalendar(){
document.write("<table border='1' cellspacing='3' width='180' bordercolor='#009B00' bgcolor='#FFFFFF' height='110' cellpadding='2'");
document.write("<tr><td align='center'><b>"+YYMMDD()+"<br><font face='Arial' size='6' color=#FF8040>"+SD+"</font><br>");
document.write(weekday()+"<br><font id=ClockTime color=red></font>"+"<br></b>");
document.write(solarDay1()+"<br>"+solarDay2()+"<br>"+solarDay3()+"</td></tr></table>");
}
setCalendar();
setInterval('refreshCalendarClock()',1000);//1秒钟刷新1次当前时间
//-->
以下是预览的效果。
