It was presented before me in the following manner: A large company of heathen idolaters bore a black banner, upon which were figures of the sun, moon, and stars(world’s week has names of the sun, moon and stars). This company seemed to be very fierce and angry. I was then shown another company bearing a pure white(lebanah-“white as the moon”) banner, upon which was written, “Purity and holiness unto Yehovah”.
Early Writings page 211 & 212

S.D.A. Bible Commentary Vol. 7-CN- REV14-CT- Revelation-PR- 07-PG- 977
(Ch. 7:2, 3). The Question Before Us Now. –The Sabbath question is to be the issue in the great final conflict, in which all the world will act a part. Men have honored Satan’s principles above the principles that rule in the heavens.(see Gen. 1:14) They have accepted the spurious sabbath, which Satan has exalted as the sign of his authority. But YHVH Elohim has set His Seal upon His Royal Requirement. Each Sabbath institution, both true and false, bears the name of its author, an ineffaceable mark that shows the authority of each.

This paragraph explanations:
The banner represents a calendar, as Ezekiel 13:10-15, the wall represents the false calendar, with it’s weekly cycle. It is the “Black Banner”.
The Pure White Banner, represents the lunar Biblical calendar(see Amos 7:7-the wall represents the lunar calendar-determined by the plumb-line, swayed by the conjunction of the sun and moon’s gravity, coming up in the east-perpendicular with the plumb-bob and line), with it’s 4 weekly cycles in honor of the 4 letter’s of His Great and Qodesh and saving Name yod-he-vav-he. (for more info see lunar-sabbath.org)

Ellen White plainly tells us of “Additional Light” given by the 4th angel, or “that other angel”, and that the Sabbath is the Great point at issue, but also His Great and Majestic and Wonderful, and Marvelous Saving Name, YHVH, which the angel with a writer’s ink-horn places on the foreheads of those who are sighing and crying for all the abominations that be done in the land.
These four letters begin each of the 4 weekly cycles, as time issues out of our Heavenly Father, YHVH. This illustration is in Leviticus 1:1 in the Masoretic text. Study carefully the sequences of the letters, as He “hid” His calendar, knowing the man of sin would hide it or blot it out of Scriptures. Note this quote-Early Writings of Ellen G. White – Experience and Views – Page 32, 33
But the fourth, the Sabbath commandment, shone above them all; for the Sabbath was set apart to be kept in honor of Elohim’s holy name. – Notice His Name, each of the 4 letters, issues the 4 sequences of 7 letters in Leviticus 1:1

Isaiah 66:23 And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before Me, saith YHVH.

As the storm approaches, a LARGE class who have professed faith in the Third Message, but have not been sanctified through it, abandon their position, AND TAKE REFUGE UNDER THE BANNER OF THE POWERS OF DARKNESS. BY UNITING WITH THE WORLD AND PARTAKING OF ITS SPIRIT, THEY COME TO VIEW MATTERS IN NEARLY THE SAME LIGHT; AND WHEN THE TEST is BROUGHT, THEY ARE PREPARED TO CHOOSE THE EASY, POPULAR SIDE.
Spirit of Prophecy v. 4, p. 426

S.D.A. Bible Commentary Vol. 7-CN- REV14-CT- Revelation-PR- 07-PG- 977
(Ch. 7:2, 3). The Question Before Us Now. –The Sabbath question is to be the issue in the great final conflict, in which all the world will act a part. Men have honored Satan’s principles above the principles that rule in the heavens.(see Gen. 1:14) They have accepted the spurious sabbath, which Satan has exalted as the sign of his authority. But YHVH Elohim has set His Seal upon His Royal Requirement. Each Sabbath institution, both true and false, bears the name of its author, an ineffaceable mark that shows the authority of each.

Genesis 1:14 And Elohim said, Let the lights in the firmament of the heavens separate the day from the night; and they will be for signs-(226-owth), and for seasons-(4150-moed-appointments), and for days, and years: Strong’s #226 ‘owth, oth; prob. from 225 (in the sense of appearing); a signal (lit. or fig.), as a flag, beacon, monument, omen, prodigy, evidence, etc.:–mark, miracle, (en-) sign, token.

Psalms 104:19 He appointeth the moon for seasons-4150 (moed-appointment times of congregation): the sun knoweth his going down

Daniel 8:10
10 And it(the solar only calendar) waxed great, [even] to the host of heaven; and it cast down [some](the moon for numbering days of the sun) of the host and of the stars to the ground, and stamped upon them.

Note: “The host of heaven” in Daniel 8:10 are not the heavenly angels unfallen, but rather in particular, the “Moon” is the main clockworks, that has been removed from Heaven’s ordained “keepers of time”

Rev. 12:1- And there appeared a great wonder in heaven; a woman clothed with the sun, and the moon under her feet, and upon her head a crown of twelve stars.

With the moon removed, we have not the possibility to keep “His Sabbaths” and “His New Moons”