All Jews and gentiles who observe YHWH mitzvot must prepare for YOM Kippur, which starts sundown on Sep 15th, (10 Tishrei 5782)
There is zero tolerance for non-observation of YOM Kippur for you and your family members or those who live within your home under Torah.
Those who do not observe Yom Kippur are kareth, or cut off by HaShem no matter if you claim yourself as a Jew or live in Israel.
This is not a “happy holiday” or chag sameach, nor does YHWH delegate as such as the false spiritual leaders out there.
For calendar and more precise timing please go to hebcal,
The word of Eloheinu,
27 Also on the tenth day of this seventh month there shall be a day of atonement: it shall be an holy convocation unto you; and ye shall afflict your souls, and offer an offering made by fire unto the Lord.
28 And ye shall do no work in that same day: for it is a day of atonement, to make an atonement for you before the Lord your God.
29 For whatsoever soul it be that shall not be afflicted in that same day, he shall be cut off from among his people.
30 And whatsoever soul it be that doeth any work in that same day, the same soul will I destroy from among his people.
31 Ye shall do no manner of work: it shall be a statute for ever throughout your generations in all your dwellings.
Glory and praise be to YHWH and His Mashiach as we approach His YOM to remember our sin, our rebellion, and diaspora of which we caused.
Have mercy on us YHWH our God and redeem us with your Mashiach!