Day of Atonement
It has been brought to my attention that there are seven Jewish Feasts where the first three foreshadow Christ’s work of redemption and the fourth foreshadowed the coming of the Holy Spirit. The final three are to foreshadow the second coming of Christ. Many believe that when these types are fulfilled they are so done on the actual dates of the festivals.
Here is one such site called the Lamb and Lion Ministries.
Is this common orthodox understanding and on what basis are these claims substantiated?