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solar day 太陽日。

solar eclipse

We say approximately because a year has 365 . 2422 solar days . to compensate the extra 0 . 2422 days , some years will have 365 days while some years , called leap years 為了避免長久累積這0 . 2422日而出現誤差,我們有4年一閏的解決辦法,普通年是365日,但

Thus , as the lunar month is only about 29 1 / 2 solar days , the tithi does not coincide with the natural day ( ahoratra ) 因此,太陰月只不過是相當于大約291 / 2個太陽日,提泰并沒有與自然日(阿豪拉塔)相符。

He is the first known astronomer on that continent to have used a continuous system of counting solar days 他是所知的第一位南亞次大陸天文學家使用持續的系統去計算太陽日。

This is exactly how the sundial works . this defines the solar day ,利用太陽投影位置量度時間的日晷,便是根據這個定義運作的計時儀器。

They tracked natural cycles : the solar day , the lunar month and the solar year 他們遵循自然的循環:太陽日、太陰月,還有太陽年。

Mean solar day 平太陽日平均太陽日