Numbers 9:17-22

Verse 21

Whether - by day or by night - As the heat of the day is very severe in that same desert, the night season is sometimes chosen for the performance of a journey; though it is very likely that in the case of the Israelites this was seldom resorted to.
Verse 22

Two days - a month - a year - It was by the Divine counsel alone that they were directed in all their peregrinations: and from the above words we see that their times of tarrying at different stations were very unequal.
Copyright information for Clarke