Under the Orthodox New Calendar, Nov. 8th is indeed the Feast of the Holy Archangels. But under the Orthodox Old Calendar, that day is November 21. It is an important day for those Serbian families that celebrate St. Michael as their Slava, and also for their friends who visit them.
But the appointed Feast for November 8th under the Orthodox Old Calendar is also an appropriate one—the Feast of the Holy Great Martyr St. Demetrius!!!!
The world has found you to be a great defense against tribulation / and a vanquisher of heathens, O Passion-bearer. / As you bolstered the courage of Nestor, / who then humbled the arrogance of Lyaios in battle, / Holy Demetrius, entreat Christ God to grant us great mercy.
God, who has given you invincible might, / has tinged the Church with streams of your blood, Demetrius! / He preserves your city from harm, / for you are its foundation!
St. Demetrius is also a Slava for some Serbs. In Serbian, the day is called Mitrovdan. St. Michael’s Day is Arandjelovdan.
https://en.wikipedia.org/wiki/Slava
Gospodi pomiluj!