And I heard the man clothed in linen, which was upon the waters of the river, when he held up his right hand and his left hand unto heaven, and sware by him that liveth for ever that it shall be for a time, times, and an half; and when he shall have accomplished to scatter the power of the holy people, all these things shall be finished. (Daniel 12:7)
That is, the 1260-year period, A.D. 538-1798, which is first introduced in ch. 7:25 (see comments there). There the Aramaic ‘iddan, “a specified time,” or “a definite time,” is used; here its Hebrew counterpart, mo‘ed, appears, a word that emphasizes the fact that the heavenly Being speaks of an “appointed time” (see on ch. 11:35). God has sworn to meet His appointment.