My understanding is that is a reference to the Day when the majority of Jews are saved, most likely because of the SUCCESSFUL witnessing by the TWO WITNESSES in Revelation, AND what they see happen to them. IN JERUSALEM is where the TWO WITNESSES finish their Testifying about Jesus being the Messiah, and then the Antichrist kills them, Thus, that is also when the Majority of Jews will Recognize JESUS as the Messiah, whom their Ancestors crucified, ESPECIALLY AFTER THEY SEE THE RESURRECTION OF THOSE TWO WITNESSES and HEAR GOD's COMMAND TO THEM:
Revelation 11:7-13 (NIV)
[SUP]7 [/SUP] Now when they have finished their testimony, the beast that comes up from the Abyss will attack them, and overpower and kill them.
[SUP]8 [/SUP] Their bodies will lie in the street of the great city, which is figuratively called Sodom and Egypt, where also their Lord was crucified.
[SUP]9 [/SUP] For three and a half days men from every people, tribe, language and nation will gaze on their bodies and refuse them burial. [NOT POSSIBLE BEFORE SATELLITE TV.]
[SUP]10 [/SUP] The inhabitants of the earth will gloat over them and will celebrate by sending each other gifts, because these two prophets had tormented those who live on the earth.
[SUP]11 [/SUP] But after the three and a half days a breath of life from God entered them, and they stood on their feet, and terror struck those who saw them.
[SUP]12 [/SUP] Then they heard a loud voice from heaven saying to them, "Come up here." And they went up to heaven in a cloud, while their enemies looked on.
[SUP]13 [/SUP] At that very hour there was a severe earthquake and a tenth of the city collapsed. Seven thousand people were killed in the earthquake, and the survivors were terrified and gave glory to the God of heaven. [THAT IS THE MOMENT IN TIME THAT I BELIEVE Zech. 12:10 IS TALKING ABOUT.]