יהושע, פרק ה׳, פסוק י׳

The encampment at Gilgal marks a profound turning point for the Israelites, allowing them to properly fulfill a major commandment after a long delay. For an extended period, they were unable to offer the Passover sacrifice because they were uncircumcised, a status that strictly forbade their participation. Only now, having undergone circumcision, are they finally able to carry out this duty [מלבי״ם].

With their physical state restored, the people observe the Passover exactly at its designated time [ביאור שטיינזלץ]. The sacrifice takes place in the afternoon, specifically starting after midday just as the sun begins its descent toward the west [מצודת דוד]. They gather for this event in the open, empty plains situated directly between the city of Jericho and the Jordan River [ביאור שטיינזלץ].