- The Passover (23:4-8), on the 14th day of the first month
- The Feast of Firstfruits (23:9-14), after the harvest
- The Feast of Weeks (23:15-22), seven weeks after the sheave offering
- The Feast of Trumpets (23:23-25), on the 1st day of the seventh month
- The Day of Atonement (23:26-32), on the 10th day of the seventh month
- The Feast of Booths (23:33-43), beginning on the 15th day of the seventh month
As we will see in the rest of the Old Testament, while these special days should have served as important reminders, Israel often neglected to follow the calendar of holy days. And even when the nation did keep the Sabbaths and festivals, they often did so in a ritualistic fashion, thinking only of the observance and not of the God who was to be remembered.
In the New Testament the only "special day" designated for Christians under the new covenant is the first day of the week (Acts 20:7; 1 Cor. 16:1-2). The day of Jesus' resurrection is the day we are to gather to remember Him (this included the very first day of the preaching of the apostles, since the Feast of Weeks - Pentecost - fell on the first day of the week). But like Israel, we can easily take these regular assemblies for granted, viewing them as perfunctory duties to check off rather than reminders of the God we serve.