If our Jewish ancestors were using Lunar Calendar and is found to be more accurate, why do we not use it as our liturgical calendar?

[TINYAD]

The three great religions of the book prefer the lunar calendar. And many ancient cultures too use the lunar calendar. it is very accurate. as per scientific understanding. the Passover, the Easter date is calculated based on the lunar calendar.
Why not our liturgical calendar be based on lunar calendar?

 

[1ke]

The three great religions of the book prefer the lunar calendar.

Well, two of them use a lunar calendar to determine religious holidays— Muslims and Jews. The third—
Christianity— used the Julian calendar and then the Gregorian. Edited to add: the date of Easter is based on a lunar calculation.

Most all countries use the Gregorian calendar for civil business and common trade and treaty.

Why not our liturgical calendar be based on lunar calendar?

Because a lunar calendar has substantial drift.

The Gregorian calendar is much more accurate marking time as a full rotation of the earth around the sun.

 

[BartholomewB]

Why not our liturgical calendar be based on lunar calendar?

All Christian churches do in fact use the lunar calendar, though only to a limited extent. Easter is defined as the Sunday following the first full moon following the Spring equinox. Have a look at the back of your Bible: you’ll probably find a table showing the dates of Easter and an explanation of the technical terms used, such as epact, dominical letter, and golden number.

 

[Spyridon]

Technically the Jews don’t use a Lunar calendar.

They use a Lunisolar calendar.