Orthros marks the early part of the day when people enter the sacred place or come to a tomb.

The two occurrences place actions at the beginning of the day: entry into the sacred place in Acts 5:21 and arrival at the tomb in Luke 24:1.

1. Early-day setting for an action · dominant

   In Acts 5:21, the accusative singular form occurs with entering the sacred place and teaching; the APB renders the setting as “at dawn.” In Luke 24:1, the genitive singular form occurs with coming to the tomb bearing prepared spices; the APB renders the setting as “at deep dawn.”

   Acts 5:21Luke 24:1

In the Anselm Project Bible: The APB presents the time setting as “at dawn” in Acts 5:21 and “at deep dawn” in Luke 24:1. These phrases confirm the verses' temporal setting rather than isolate a precise English equivalent.