Lev 23:2 "Speak unto the children of Israel, and say unto them, 'Concerning the feasts of YeHoVaH, which ye shall proclaim to be holy convocations, even these are my feasts.'" Lev 23:3 "Six days shall work be done: but the seventh day is the sabbath of rest, an holy convocation; ye shall do no work therein: it is the sabbath of YeHoVaH in all your dwellings."

YeHoVaH in His wisdom gave His people a weekly feast called the Sabbath (the 7th Day) and Annual feasts. These feasts are referred to as “the Early feasts” and “the Latter feasts” The Annual feasts (Early and Latter) are connected to the harvest season, while the weekly 7th Day Sabbath feast is year-round.

Lev 23:2 "Speak unto the children of Israel, and say unto them, 'Concerning the feasts of YeHoVaH, which ye shall proclaim to be holy convocations, even these are my feasts.'" Lev 23:3 "Six days shall work be done: but the seventh day is the sabbath of rest, an holy convocation; ye shall do no work therein: it is the sabbath of YeHoVaH in all your dwellings."

Each of the feasts (The weekly and annual) are to be celebrated in the presence of YeHoVaH. In addition to the weekly 7th Day Sabbath holy convocation, there are 7 Special Sabbaths during the Early and Latter feasts. These Sabbaths are to be celebrated in a sacred gathering or assembly and are referred to as  "holy convocation" also.

Weekly Sabbath: sundown Friday (6th day) to sundown Saturday (7th day) Lev 23:4 "These are the feasts of YeHoVaH, even holy convocations, which ye shall proclaim in their seasons."