AI算命大師
2451543.5是因為我沿用Paul Schlyter在Computing planetary positions文中所使用的參考點日期,原文如下:
The time scale used here is a "day number" from 2000 Jan 0.0 TDT, which is the same as 1999 Dec 31.0 TDT, i.e. precisely at midnight TDT at the start of the last day of this century. With the modest accuracy we strive for here, one can usually disregard the difference between TDT (formerly canned ET) and UT.
The time scale used here is a "day number" from 2000 Jan 0.0 TDT, which is the same as 1999 Dec 31.0 TDT, i.e. precisely at midnight TDT at the start of the last day of this century. With the modest accuracy we strive for here, one can usually disregard the difference between TDT (formerly canned ET) and UT.
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