“And as Yeshua's custom was,
he went into the synagogue on the Shabbat, and stood up to read.” (Luke 4:16)
Shabbat begins at sundown on Friday and ends at sundown on Saturday. If you had been traveling with Yeshua, every Shabbat you would have gone to a synagogue and listened to selected people read portions of the Torah (Genesis through Deuteronomy), followed by the Haftarah. After the readings, discussions and prayers would have followed.
When the Apostles met to discuss the requirements for Gentiles to become members of the Yeshua Movement, they agreed on minimal requirements because the new members would be going to synagogues every Shabbat:
For Moses has had throughout many generations those who preach him in every city,
being read in the synagogues every Shabbat. (Acts 15:21)