True, and that is because Jesus is the fulfilment of all those holidays. Those holidays were a ‘precursor’ to Jesus.
Yom Kippur, the day of atonement . . .Jesus atoned for us all on Good Friday.
Rosh Hoshana, the new year: Jesus ushered in a New Year on Easter.
Passover: Jesus is the Passover Lamb and He celebrated this on Holy Thursday.
Etc.
Furthermore, every Sunday is a ‘little Easter’. . .and every Easter is not only a ‘new year’ but contains all the other elements. In Mass, we celebrate atonement, a new year, the Passover, Christ the Light of the World (Hanukkah), the Eucharist is our first fruits/feast (Sukkot), etc. etc.
And Mass is held every day, so at all times, Christ is our salvation and our feast, and every day is a festival, rooted in the Jewish ‘preliminaries’ and brought to fruition in Christ.