21 Finally the opportune time came. On his birthday Herod gave a banquet for his high officials and military commanders and the leading men of Galilee.

Read Mark 6:21 Using Other Translations

And when a convenient day was come, that Herod on his birthday made a supper to his lords, high captains, and chief estates of Galilee;
But an opportunity came when Herod on his birthday gave a banquet for his nobles and military commanders and the leading men of Galilee.
Herodias’s chance finally came on Herod’s birthday. He gave a party for his high government officials, army officers, and the leading citizens of Galilee.