In The Great Controversy, 306-308 and 332-334, Ellen White states that the signs in the sun, moon, and stars were fulfilled in 1780 and 1833. In Early Writings, 41, she says that the powers of heaven (the sun, moon, and stars) will be shaken at the voice of God, which is still a future event. Ford asserts that these two prophecies point to the same event. (See Ford, pages 547-549.) Is this true? QSEW 61.3
No. In her Great Controversy account Ellen White is discussing the heavenly signs referred to in Luke 21:25, whereas in Early Writings she is discussing the shaking of the powers of heaven mentioned in Luke 21:26. These are different, not the same, events. The sun was not “shaken” when it was darkened, nor was the moon “shaken” when it looked like blood. Ellen White states that “the sun, moon, and stars will be moved out of their places” at the voice of God. This is clearly a different set of events from the darkening of the sun, etc. QSEW 62.1