Parallel
Daniel (Theodotion) 10:2
Rahlfs Septuagint (1935) · Berean Standard Bible
ἐν ταῖς ἡμέραις ἐκείναις ἐγὼ Δανιηλ ἤμην πενθῶν τρεῖς ἑβδομάδας ἡμερῶν
In those days I, Daniel, was mourning for three full weeks.