It is used to calculate Jewish festivals and Holy days.

它用于计算犹太节日和神圣的日子。

youdao

Samhain was the most important of the Celtic fire festivals or holy days because it was the start of the New Year.

属阴节是凯尔特人最重要的篝火节日，因为这一天被视作新年的开始。

youdao

Samhain was the most important of the Celtic fire festivals, or holy days, because it was the start of the New Year.

属阴节是凯尔特人最重要的篝火节日，因为这一天被视作新年的开始。

youdao

There are also non-Christian holy days around this time of year.

VOA: special.2011.04.22

Then there are certain holy days: and they are separated and demarcated from common time by special rules that mark them as different.

然后是一些神圣日：,和普通的时间,被一些特殊的判定它们不同的规则所区分开。

耶鲁公开课 - 旧约导论课程节选

In those days, religious workers cared for sick travelers at shelters near holy places.

VOA: special.2010.05.04

Candles became important parts of religious ceremony, their lighting used to mark holy days and accompany prayer.

FORBES: Magazine Article

After the planned sneak preview in mid-June, religious services are to resume in time for High Holy Days in September.

NPR: $150 Million Reboot For Hollywood Temple To Stars

Although people bathe every day throughout the festival, there are three especially holy days when bathing brings even greater merit.

BBC: India hosts the world��s biggest gathering