Numbers 9:19-22

19When the cloud would remain over the Tabernacle many days, Bnei-Yisrael would obey the command of Adonai and not set out.

20At times the cloud stayed over the Tabernacle only a few days. At Adonai’s word they would encamp, and at Adonai’s word they would set out.

21At 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.

22Whether 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.