Numbers 10:11, 33-34

In the second year, in the second month, on the twentieth day of the month, the cloud lifted from over the tabernacle of the testimony

So they set out from the mount of the LORD three days’ journey. And the ark of the covenant of the LORD went before them three days’ journey, to seek out a resting place for them. And the cloud of the LORD was over them by day, whenever they set out from the camp.