Firstly, ותש"ם בסוף refers to 746 years into the last, sixth, millenium. This was after the Knesset, with silent consent of almost all sectors of Yisrael, delegitimized Rav Meir Kahane. The process of Geula was endangered, and Kahane was killed a short time after 750 years into the sixth millenium, fulfilling the words of the holy Ramchal in Tikkun 8 of Tikkunim Chadashim:
If a day is a thousand years, the time until Chatzot HaYom is 750 years.ומשיח בן יוסף נמי ביומא שתיתאה בתר פלגו דיומא אתחזיאת לה מותא לאתקנא תקונא שלים. ומתמן ולהלאה יתחברון תרין אילנין כחדא למהוי בשלימו חד
And also Moshiach ben Yosef is destined to die on the sixth day after Chatzot HaYom, to achieve a perfect Tikkun. From then on, the two trees (Moshiach ben Yosef and Moshiach ben David) are combined into one, to be one in wholeness.
Secondly, בסוף על שפ"ת היאור refers to the time of the last Yeor, the 13th after a thousand Yeorin, at the bank between 506.5 of the right and 506.5 of the left, 780 years into the sixth millenium. Like Moshe, Yisrael will enter danger and survive it by miracle.
(Thanks to Gedaliah)
קג