#yomteruah, #yomkippur, and #sukkot are a continuous whole on God's calendar:

Day of Judgment >> 10 days of awe and repentance >> Day of Atonement >> culminating in a massive celebration of Salvation, Liberty, Torah, and Messiah.

The span between Yom Teruah (aka #roshhashanah) and Yom Kippur is a time for seeking God, repenting, and preparing for major changes.

Did Jesus eliminate the need for repentance? Of course not! He is the fulfillment of the prophecies of God's appointed times, but we still need the regular reminders of what God has done and will continue doing for us.