Is that so?  Let's see what Scripture has to say about that...

Leviticus 23 lists all of the annual Sabbaths.  It also begins by TWICE calling the WEEKLY Sabbath a mo’edim,
using the same Hebrew word used to describe the annual feasts found in verse 4, mo’edim.  Please read this for
yourself.  Behold the word…

And YHVH spake unto Moses, saying,
Speak unto the children of Israel, and say unto them,
Concerning the feasts (H4150) of YHVH, which ye shall
proclaim to be holy convocations,
even these are My feasts. (H4150)
Six days shall work be done: but the seventh day is the sabbath (H7676) of rest, an holy convocation; ye shall do no
work therein: it is the sabbath
(H7676) of YHVH in all your dwellings.
These are the feasts
(H4150) of YHVH, even holy convocations, which ye shall proclaim in their seasons. (H4150)  
Leviticus 23:1-4  

Leviticus 23:4-36
goes on to list the other annual festivals, and gives their dates of the lunar months.

A few questions if I may.

1.  WHOSE feasts are these?  Moses’ or the YHVH’s?  Two times in
Leviticus 23:2, the Creator claims they are
HIS.  See underlined above.

2.  And what is the FIRST feast (appointed time) listed?  The weekly Sabbath.  If there is any doubt, please read
verse 3.

3.  What Hebrew word is used twice in
Leviticus 23:2 to describe the Sabbath mentioned in this text?  H7676, the
word for the WEEKLY Sabbath.

4.  What other Hebrew word is used TWICE in
Leviticus 23:2 to describe the weekly Sabbath?  H4150, Mo’edim,
Hebrew for set feasts or times appointed.

5.  What Hebrew word is used in
Leviticus 23:4  to describe the annual feasts or festival Sabbaths?  H4150, Mo’
edim, Hebrew for set feasts or times appointed.
21.  A lunar Sabbath would imply that the Sabbath is part of the Israelite festivals (feasts),
but everyone knows that the Sabbath is not one of the feasts.
Objections to the Calendar of Creation: