en_tn/dan/09/21.md

the man Gabriel

This is the same angel Gabriel who appeared in the form of a man in Daniel 8:16. AT: "Gabriel, who appeared as a man" (See: rc://en/ta/man/translate/figs-explicit)

in the vision at the first

This may refer to the first vision that Daniel had while he was awake. AT: "in the previous vision" or "in the vision I saw before" or "in a vision before"

flew down to me in rapid flight

"flew down to me quickly"

at the time of the evening sacrifice

The Jewish people sacrificed to God each evening just before the sun went down.