At times the cloud remained only from evening until morning. When the cloud would lift, they would set out. Whether by day or by night, when the cloud lifted, they would set out.
“Yet in Your great compassion You did not abandon them in the wilderness. The pillar of cloud by day did not depart from above them, guiding them in the way, nor the pillar of fire by night, illuminating the way they should go.
Whether for two days or a month or a year, while the cloud remained over the Tabernacle, Bnei-Yisrael remained camped and would not set out. But when it would lift, they would set out.