篇一：二十四节气推算
二十四节气推算
一年有二十四个节气，计十十个节十二个气，即一个月之内有一节一气。每节气相距，平均约三十天又十分之四，而阴历每月之日数，则为二十九天半，故约每三十四个月，必遇有两月仅有节而无气、及有气而无节者，有节无气之月，即阴历之闰月，有气无节之月不为闰月。节气与阴历月份关系如下：
立春正月节雨水正月气惊蛰二月节春分二月气清明三月节谷雨三月气立夏四月节小满四月气 芒种五月节夏至五月气小暑六月节大暑六月气 立秋七月节处暑七月气白露八月节秋分八月气 寒露九月节 霜降九月气立冬十月节小雪十月气 大雪十一月节 冬至十一月气 小寒十二月节大寒十二月所
篇二：二十四节气推算法
干支纪时是我国独创的历史最悠久的历法。它以天象为依据，符合物候特点，体现了五行旺衰。在诸多学科中，有着其它历法不可替代的作用。干支纪时，在中医、气功、周易数术、农作、历法等领域中：有着特殊的实用价值。每当需用干支纪时，而需用者手中没有万年历的时候，往往束手无策。
，只需记住十四字的歌诀，一年中的干支纪时就可迅速算出。这种快速心算万年历的方法，叫“银盘子”，“银盘子”是民间术士创造的万年历速算法，历史悠久，以往采用师徒间口授方法传授，严禁外传，我们在此将“银盘子”合盘端出，公诸於世，以进一
农历有大月、小月之分，大月30天，小月29天。如果不考虑小月因素，农历两个月60天，与一个甲子六十组干支数目相符，即每两个月可重合一个甲子。按照这样一个规律，知道了某年的正月初一的日干支，就等于知道了三月初一，五月初一，七月初一，九月初一，十一月初一的日干支，这几个月的初一的日干支，应是相同的(有闰月者，月分稍有变化)因为农历中存在小月，只要知道某年有几个小月，其分别为哪几个月，所推日期经历了几个小月，干支纪日顺延几天就是了，这样心算干支纪日就变得十分简单了。
心算万年历，必须了解以下四个要点：。 (1)该年岁次；(2)正月初一的日干支；(3)立春的日、时；(4)当年几个小月，分别为哪几个月。
“银盘子”仅用了十四个字的歌诀，便将以上四个问题圆满地解决了。“银盘子”的创造者，为了保守秘密，在编制口诀时，采用了“加密术”，即对同一地支，往往采用多种称谓。这样做，一是提供了多一些的音韵，使编出的歌诀押韵。而更主要的是为这种心算法采取了“加密”。同一地支众多称谓，变换使用，即便外人听到也不得其解。
“银盘子”不但对地支称谓进行了加密处理，为了便于记忆，控制歌诀字数，还设置了一些相关月份的简称。月时，可称“金蝉”。另外遇到闰月，分别以前、后、双表示。如后五，指闰五月，前三，指前三月，双七指前、后两个七月。
发现节气与农历月之间，有一定规律可以进行修正，只要加上相应的修正值，从立春节即可推算全年任何一个节气的交节日期。大部分节气不差一个时辰。个别节气在推算中会有几个时辰的误差，但用心算法达到这样的精度，已经完全可以满足实用要求了。古人曾规定了一个修正数，不甚精确，笔者经过慎密演算，重新确定了修正值，歌诀是：
立春时刻起根源，惊蛰倒退时辰三，要知清明三月节，不用加减做龙坛。
加八时辰是立夏，二日退一芒种天，三日四时为小暑，五天秋到衣食干。
五日十时交白露，六日五时寒露天，六日七时立冬节，六日四时大雪连。
五日九时交小寒，推算不会差半天。
以上是从立春节时间起计算不同节气，需要加上有不同时间修正值。了解了由立春起，推算十二节气时修正值，再根据“银盘于”歌，即可算出一年中的任何一个节气的交节时间，知道了交节时间，就能确定干支纪月的起始。
试以1957年为例，推算立冬时间，确定干支纪月。
“银盘子”歌诀曰：“丁酉癸卯初五蛇，木局后刀四申丑上查”。“银盘子”所表达的意思为：1957年岁次丁酉，正月初一的日干支是癸卯，正月初五巳时立春。十月、二月、六月、闰八月、四月、七月、腊月为小月，该年闰八月。
立冬节为十月节，因该年闰八月，所以立冬节在阴历九月中，该年正月初五立春，设九个月后的初五(即九月初五)立冬。立冬前经历了五个小月(小月29日，干支月约30日)，先补上五日，再加上修正值六日七个时辰，即为立冬时间。
立冬日期为：九月初五巳时+(五日) +(六日七个时辰)=九月十七日子。
根据“五虎遁”规定，干支月为辛亥月。再以1938年为例，推算芒种节时间，确定干支纪月。 “银盘于”歌诀曰：“戊寅癸亥初五戌，印酉龙羊闰前七”。
“银盘子”所表达的意思为：1938年岁，次戊寅，正月初一日干支为癸亥，该年正月初五戌时立春。该年四月、八月、三月、六月、前七月、十一月为小月，是年闰七月。
芒种节为五月节。芒种经历了三月、四月两个小月，修正值为二日退一时辰。正月初五立春，设五月初五为芒种节。芒种节交节时间为：五月初五戌时+(两日)+(两日-1时辰)＝五月初九酉时。根据“五虎遁”规定：干支月为戊午月。
“银盘子”是中国先人在社会实践中创造出来的心算万年历法。只要将六十甲子热练掌握，用心记住十四个字，即可推算出一年之历法。记住数百个字(几十个歌诀)就可推算数十年的历法．可以说学会此法，即胸有历书，很有实用价值。现在我们大力提倡学术交流’，不搞门户之见，完全可以去掉“银盘子”的加密做法，重新编制歌诀，使之更简明、易记，让更多的人掌握心算万年历法，使这种隐匿在民间的秘术服务于社会。
速算干支年历歌诀新编
(1941—2000)41． 辛巳乙亥初九马 前六金蝉龙猴打42． 壬午黄猪十九鸡 二五九月十一七
43． 癸未甲午当日鼠 正三八十腊月五44． 甲申戊子十二卯 前四二五猴猪咬
45． 乙酉癸丑廿二午 正二四五猴与鼠46． 丙戌丁未初三鸡 二三五六八鼠息47． 丁女辛丑十四夜 后二三五六八亥48． 戊子乙丑廿六卯 玉兰七九子上找49． 已丑黄羊初七马 二五九鼠七月俩50． 庚寅癸未十八酉 正四七八猪与牛51． 辛卯丁丑廿八夜 二五七九与子月52． 壬辰黑猴初十虎 正三六九子前五53． 癸巳丙申廿一蛇 正三四七十腊查54． 甲午庚寅初二申 二四五七十月真55． 乙未青鸡十二亥 火局前三七蛇在56． 丙申己酉廿四虎 正三五六八与猪57． 丁酉癸卯初五蛇 玉兰后八七十腊
58． 戊戌丙寅十六申 四六七九子月真59． 己亥辛酉廿七猪 正四六月金蝉出60． 庚子乙卯初九虎 二四后六金蝉舞61． 辛丑己卯十九蛇 二四六九子鼠爬62． 壬寅甲戌三十申 正三四六九腊真63． 癸卯戊辰十一亥 玉兰后四鸡牛在64． 甲辰黑龙廿二虎 二四七九再加五
65． 乙巳丁亥初三辰 正月五八季月临66． 丙午庚辰十五羊 后三五八九牛羊67． 丁未青龙廿五狗 三六七九子上走68． 戊申己亥初七丑 正三六子后七九69． 已酉癸亥十八辰 金蝉三五还有寅70． 庚戌丁巳廿八未 二三五八子月对71． 辛女壬子初九戌 水局正四后五居72． 壬子红鼠廿一卯 正三四六八子小73． 癸丑庚午初二辰 二四五七八子真74． 甲寅甲子十三羊 后四五八水局长75． 乙卯戊子廿四酉 三五六八十一九76． 丙辰壬午初六鼠 五九后八水局主77． 丁巳丙午十七卯 二五七九子丑找78． 戊午庚子廿七马 二五八十腊月查79． 已未木羊初八酉(闰六) 二三五七十与丑80． 庚申己未十九鼠 二月三月七十五81． 辛酉甲寅三十兔 正三四六猴与猪82． 壬戌戊申十一马 玉兰后四七九查83． 癸亥壬申廿二酉 二四五七亥猪走84． 甲子丙寅初三夜 二五六八九后十85． 乙丑庚寅一五卯 正四六八狗鼠跑86． 丙寅甲申廿六午 正四七九牛与鼠87． 丁卯戊寅初七猴 二四后六九子丑88． 戊辰壬寅十七亥 九月玉兰丑牛在89． 已巳丁酉廿八寅 二三五七九月真90． 庚午壬辰初九蛇 正三四六后五八91． 辛未丙辰二十申 正三四六七九真
92． 壬申庚戌当日亥 正四五七鸡猪来93． 癸酉甲辰十三虎 金蝉后三正七五
94． 甲戌丁卯廿四蛇 四六八九子月查95． 乙亥壬戌初五猴 正四子六后八九
96． 丙子红狗十六亥 正三六八鼠牛在97． 丁丑庚辰廿七虎 二四六九丑牛犊
98． 戊寅乙亥初八辰 二三双五鸡鼠奔99． 己卯黄猪十九未 二三五六八丑对
2000 庚辰癸巳廿九狗 三四六七九牛走
篇三：二十四节气的C语言算法
【算法】二十四节气的C语言算法
2009-05-27 23:12
二十四节气是我国劳动人民创造的辉煌文化，它能反映季节的变化，指导农事活动，影响着千家万户的衣食住行。有人认为二十四节气从属农历，其实，它是根据阳历划定的。即根据太阳在黄道上的位置，把一年划分为２４个彼此相等的段落。也就是把黄道分成２４个等份，每等份各占黄经15°。由于太阳通过每等份所需的时间几乎相等，二十四节气的公历日期每年大致相同：上半年在６日、２１日前后，下半年在８日、２３日前后。
节气需要存表，没有固定规律，数据来源别人的VB程序，查询程序是自己写的。如下：
/****************************************************************************************************************************
函数功能： 二十四节气数据库
入口参数： unsigned char(yy,mo,dd) 对应 年月日
出口参数： unsigned char(0-24) 1-24对应二十四节气
作者 ： TOTOP
二十四节气数据库（1901--2050）
数据格式说明:
如1901年的节气为
1月 2月 3月 4月 5月6月 7月 8月9月 10月11月 12月
[ 6,21][ 4,19][ 6,21][ 5,21][ 6,22][ 6,22][ 8,23][ 8,24][ 8,24][ 8,24][ 8,23][ 8,22]
[ 9, 6][11, 4][ 9, 6][10, 6][ 9, 7][ 9, 7][ 7, 8][ 7, 9][ 7, 9][ 7, 9][ 7, 8][ 7,15]
上面第一行数据为每月节气对应公历日期,15减去每月第一个节气,每月第二个节气减去15得第二
行，这样每月两个节气对应数据都小于16,每月用一个字节存放,高位存放第一个节气数据,低位存
放第二个节气的数据,可得下表
****************************************************************************************************************************/
uchar code jieqi_code[]=
{
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1901
0x96,0xA4,0x96,0x96,0x97,0x87,0x79,0x79,0x79,0x69,0x78,0x78, //1902
0x96,0xA5,0x87,0x96,0x87,0x87,0x79,0x69,0x69,0x69,0x78,0x78, //1903
0x86,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x78,0x87, //1904
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1905
0x96,0xA4,0x96,0x96,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1906
0x96,0xA5,0x87,0x96,0x87,0x87,0x79,0x69,0x69,0x69,0x78,0x78, //1907
0x86,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1908
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1909
0x96,0xA4,0x96,0x96,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1910
0x96,0xA5,0x87,0x96,0x87,0x87,0x79,0x69,0x69,0x69,0x78,0x78, //1911
0x86,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1912
0x95,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1913
0x96,0xB4,0x96,0xA6,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1914
0x96,0xA5,0x97,0x96,0x97,0x87,0x79,0x79,0x69,0x69,0x78,0x78, //1915
0x96,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1916
0x95,0xB4,0x96,0xA6,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x87,
0x96,0xB4,0x96,0xA6,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x77, //1918
0x96,0xA5,0x97,0x96,0x97,0x87,0x79,0x79,0x69,0x69,0x78,0x78, //1919
0x96,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1920
0x95,0xB4,0x96,0xA5,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x87, //1921
0x96,0xB4,0x96,0xA6,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x77, //1922
0x96,0xA4,0x96,0x96,0x97,0x87,0x79,0x79,0x69,0x69,0x78,0x78, //1923
0x96,0xA5,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1924
0x95,0xB4,0x96,0xA5,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x87, //1925
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1926
0x96,0xA4,0x96,0x96,0x97,0x87,0x79,0x79,0x79,0x69,0x78,0x78, //1927
0x96,0xA5,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1928
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1929
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1930
0x96,0xA4,0x96,0x96,0x97,0x87,0x79,0x79,0x79,0x69,0x78,0x78, //1931
0x96,0xA5,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1932
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1933
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1934
0x96,0xA4,0x96,0x96,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1935
0x96,0xA5,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1936
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1937
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1938
0x96,0xA4,0x96,0x96,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78,
0x96,0xA5,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1940
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1941
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1942
0x96,0xA4,0x96,0x96,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1943
0x96,0xA5,0x96,0xA5,0xA6,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1944
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1945
0x95,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x78,0x69,0x78,0x77, //1946
0x96,0xB4,0x96,0xA6,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1947
0x96,0xA5,0xA6,0xA5,0xA6,0x96,0x88,0x88,0x78,0x78,0x87,0x87, //1948
0xA5,0xB4,0x96,0xA5,0x96,0x97,0x88,0x79,0x78,0x79,0x77,0x87, //1949
0x95,0xB4,0x96,0xA5,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x77, //1950
0x96,0xB4,0x96,0xA6,0x97,0x97,0x79,0x79,0x79,0x69,0x78,0x78, //1951
0x96,0xA5,0xA6,0xA5,0xA6,0x96,0x88,0x88,0x78,0x78,0x87,0x87, //1952
0xA5,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1953
0x95,0xB4,0x96,0xA5,0x96,0x97,0x78,0x79,0x78,0x68,0x78,0x87, //1954
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1955
0x96,0xA5,0xA5,0xA5,0xA6,0x96,0x88,0x88,0x78,0x78,0x87,0x87, //1956
0xA5,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1957
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1958
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1959
0x96,0xA4,0xA5,0xA5,0xA6,0x96,0x88,0x88,0x88,0x78,0x87,0x87, //1960
0xA5,0xB4,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87,
0x96,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1962
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1963
0x96,0xA4,0xA5,0xA5,0xA6,0x96,0x88,0x88,0x88,0x78,0x87,0x87, //1964
0xA5,0xB4,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1965
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1966
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1967
0x96,0xA4,0xA5,0xA5,0xA6,0xA6,0x88,0x88,0x88,0x78,0x87,0x87, //1968
0xA5,0xB4,0x96,0xA5,0x96,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1969
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1970
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x79,0x69,0x78,0x77, //1971
0x96,0xA4,0xA5,0xA5,0xA6,0xA6,0x88,0x88,0x88,0x78,0x87,0x87, //1972
0xA5,0xB5,0x96,0xA5,0xA6,0x96,0x88,0x78,0x78,0x78,0x87,0x87, //1973
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x69,0x78,0x87, //1974
0x96,0xB4,0x96,0xA6,0x97,0x97,0x78,0x79,0x78,0x69,0x78,0x77, //1975
0x96,0xA4,0xA5,0xB5,0xA6,0xA6,0x88,0x89,0x88,0x78,0x87,0x87, //1976
0xA5,0xB4,0x96,0xA5,0x96,0x96,0x88,0x88,0x78,0x78,0x87,0x87, //1977
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x78,0x87, //1978
0x96,0xB4,0x96,0xA6,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x77, //1979
0x96,0xA4,0xA5,0xB5,0xA6,0xA6,0x88,0x88,0x88,0x78,0x87,0x87, //1980
0xA5,0xB4,0x96,0xA5,0xA6,0x96,0x88,0x88,0x78,0x78,0x77,0x87, //1981
0x95,0xB4,0x96,0xA5,0x96,0x97,0x88,0x78,0x78,0x79,0x77,0x87, //1982
0x95,0xB4,0x96,0xA5,0x96,0x97,0x78,0x79,0x78,0x69,0x78,0x77,