c 1476 BCE- Moses ascends to the top of Mt Sinai. "Moses went up to the mountain, and the cloud covered the mountain...for six days. On the seventh day Hashem called to Moses from within the cloud... And Moses came within the cloud, and he went up to the top of the mountain, and Moses was upon the mountain forty days and forty nights" (Exodus 24:15-18). On the morrow of the giving of the Ten Commandments Moses ascended Mount Sinai in order to receive from the LORD the remainder of the Torah -- the remaining commandments and (traditionally) the Oral Torah. After being "cleansed" by the cloud for six days, he was ushered into the presence of the LORD on the 13th of Sivan.
1241- The first pogrom in Frankfurt on the Main took place, when an incited mob destroyed the Jewish Quarter and massacred most of its Jews.
1529- 30 Jews of Posing, Hungary, were charged in a blood libel and burned to death.
June 20, 1948- Following the War of Independence, citizens in many Arab countries began harassing their Jewish co-citizens, often times inflicting casualties and substantial property damage.
The 5,000 Jews living in Cairo, Egypt were also repeatedly victimized. On the 13th of Sivan a bomb exploded in the Jewish quarter of Cairo, murdering 22 Jews and wounding more than 40 others.
The systematic persecution caused most Egyptian Jews to flee, many choosing to move to Israel. Today, there are virtually no Jews remaining in Egypt.
May 28, 1999- The empty hull of the Israeli submarine Dakar, which disappeared in the Mediterranean on Feb, 4, 1968, was discovered in the depths.