It does not always occur on the same date as the astronomical full moon.

由于天文满月，复活节的日期不会是每年的同一天。

youdao

In time and date and linear sequence, the vortices would then not exist in the same vector, or in the same specific astronomical gravity fields, and you would not then gain the benefits.

在时间、日期和线性序列之中，漩涡不会在同一个向量或相同的天文重力场中存在，你们也因此不会得到任何益处。

youdao

Astronomical evidence cited in the Mahabharata place the incidents upon which the Gita is based in the year 3137 BCE, while the Puranas suggest a date of c. 1924 BCE.

《摩诃婆罗多》引用 的庞大得 无法 估计 的证据把博伽梵歌发性 的事件放置在公元前3137年，而宇宙古史就暗示了公元前1924年 的日子。

youdao

It is celebrated on 21 March every year, a date originally determined by astronomical calculations.

UNESCO: Culture

As of this date, it appears my client will never see his original investment even, much less the astronomical gains he supposedly earned.

FORBES: Anatomy of (Yet Another) Hedge Fund Fraud (June 1, 2001)