Genesis 50:3
It took forty days, which is the normal time for embalming. The Egyptians mourned for him seventy days.
Numbers 20:29
The entire congregation learned that Aaron had died. They all mourned for him for thirty days.
Deuteronomy 34:8
So the sons of Israel wept for Moses in the plains of Moab thirty days. Then the days of weeping and mourning for Moses came to an end.
Genesis 50:10
They mourned loudly for a long time at the threshing place at Atad east of the Jordan. Joseph performed mourning ceremonies for seven days.
Deuteronomy 21:13
She should no longer wear the clothes she was wearing when you captured her. She may live in your house and mourn the loss of her father and mother for one month. After that you may marry her.