1 sn This marks the beginning of another “we” section in Acts. These have been traditionally understood to mean that Luke was in the company of Paul for this part of the journey.
3 sn The days of Unleavened Bread refer to the week following Passover. Originally an agricultural festival commemorating the beginning of harvest, it was celebrated for seven days beginning on the fifteenth day of the month Nisan (March-April). It was later combined with Passover (Exod 12:1-20; Ezek 45:21-24; Matt 26:17; Luke 22:1).
6 sn Troas was a port city (and surrounding region) on the northwest coast of Asia Minor. From Philippi to Troas was about 125 mi (200 km).