As another example, they specified that the mean synodic month was 29;31,50,8,20 days (four fractional sexagesimal positions), which was repeated by Hipparchus and Ptolemy sexagesimally, and is currently the mean synodic month of the Hebrew calendar, though restated as 29 days 12 hours 793 halakim (where 1 hour = 1080 halakim).

此處雖然如此表示，但很難相信古希臘人需要定義秒古希臘的時(shí)間周期，像是平朔望月定義得非常精確，因?yàn)樗麄儾皇怯^察單一的朔望月九一国产短视频精品一区，而是以相距數(shù)百年的食來測(cè)量朔望月的平均長度。不過18岁以下禁看的黄色网站，發(fā)展出擺鐘來保持平時(shí)（相對(duì)於日晷所顯示的視時(shí)）欧美粉嫩泬无套在线观看，使得秒成為可測(cè)量的時(shí)間單位。

Time interval between two consecutive Hatsumi as a synodic month, length 2953059 flat solar day.

連續(xù)兩次朔日的時(shí)間間隔為一個(gè)朔望月亚洲区欧洲区视频，長度為2953059平太陽日国产91视频免费看。

The synodic month is the time from one new Moon to the next. It ranges from 29.27 days to 29.84 days with a mean of 29.53 days.

朔望月是一個(gè)新月到下一個(gè)新月的時(shí)間，它的時(shí)長從29.27天~29.84天国产玩弄老太婆，平均值是29.53天国产一级一级理论片A片一区二区。

Synodic month 朔望月 The time taken for the moon to reappear at the same ecliptic longitude of the Sun as seen from Earth, which averages 29.53 days.

月球連續(xù)兩次到達(dá)與太陽相同黃經(jīng)的時(shí)間。一個(gè)朔望月平均有 29.53 日欧美日韩羞羞视频。

mean synodic lunar month：平朔望月

平太陽 mean sun | 平朔望月 mean synodic lunar month | 平均潮位 mean tide level

mean synodic lunar month：平均塑望日

"mean sun","平均太陽" | "mean synodic lunar month","平均塑望日" | "mean time","平均時(shí)"

synodic month; synodical month：朔望月

旋轉(zhuǎn)差{磁羅經(jīng)} swirl error | 朔望月 synodic month; synodical month | 朔望潮;沖合潮 syzygy tide

synodic month：朔望月

而月定義為朔望月(synodic month),朔望月是月球繞地球一周回到原來的月相(moon phase)的時(shí)間,朔望月平均周期是29.5306日. 所有歷法都圍繞這兩個(gè)周期去訂定.

synodic month：陰歷月份

syn-hold 保持同步 | synodic month 陰歷月份 | synodic periods 會(huì)合周期;朔望周期