The approval was made by telephone, following a suggestion made by Prime Minister Benjamin Netanyahu and Defense Minister Benny Gantz.
On Sunday, flags in Israel, on IDF bases, and Israeli establishments abroad, such as at embassies, will be flown at half mast.
Netanyahu said in a statement that "On Sunday we will hold a national day of mourning and lower the Israeli flags to half-mast in all public buildings, IDF bases and Israeli missions abroad. Let us all unite in grief with the families and pray for the recovery of the wounded."
Knesset Speaker Yariv Levin and his deputies decided to hold a memorial session of the Knesset in memory of the victims on Monday. On Sunday, the Knesset flag will also be flown at half mast and MKs will be invited to light candles in memory of the victims. As a result of the disaster at Mount Meron, cultural events and musical performances that were expected to take place on Friday were cancelled throughout Israel, according to an N12 report.
Many of the artists decided to cancel their performances and said the tickets puchased will be valid for their next shows.
Omri Glickman of the band Hatikva 6 said in a statement that "We bow our hearts to the families of the victims and [provide] our prayers for the injured of the event. As for the performance - the decision is difficult, but must be made. It is time for unity, memory and mourning."
Likewise, Culture Minister Chili Tropper released a statement confirming the cancellation of all events and sports games expected to take place on Friday in solidarity with the victims.