סדר עולם SEDER OLAM places משה MOŜE's ascent to seek forgiveness for עם ישראל AM YISRAʾEL on this day.[[[ רש״י RAŜI on Exodus instead gives [י״ט בתמוז ב׳תמ״ח 19th 𝑜𝑓 Tamuz, AM 2448

Footnotes

1. רש״י RAŜI on Exodus instead gives י״ט בתמוז ב׳תמ״ח 19th 𝑜𝑓 Tamuz, AM 2448. These are alternative chronologies, not successive ascents. Seder Olam Rabbah 6,; Rashi on Exodus 33:11, ↩