What does Exodus 23:16 mean?

You should also celebrate the harvest festival when you bring in the first crops you planted, and later, the festival at the end of the year when you gather everything from your fields. Exodus 23:16 - Modern Text Bible

(This verse lays out two major festivals: one for the first harvest and one for the final harvest of the year. These are times to remember what God has provided and to celebrate together.)