I have updated this post as some new information has been passed on to me from Dov bar Leib, which is actually very exciting:
The seven stars on the North side, as mentioned below, ARE the Pleiades - they are actually known as the Seven Sisters in Greek mythology because it is composed primarily of seven bright stars in a very large nebula which can be seen as a Messier object called M45 by Astronomers. The key point being that the Pleiades highlights 7 stars.....
.. when a star on the East side will swallow seven stars on the North side, and a flame of black fire will be hanging in the firmament 60 days..... [Zohar]
[The star on the East side would be the Sun itself]........ It is hard to keep up with the plethora of gods and goddesses from Greek mythology, but one thing that sticks out with regards to the Seven Sisters is that they are the nursemaids to Dionysus, the god of drunkenness and the grape harvest. The Sin of the Spies was during the grape harvest in Eretz Yisrael, but the spies were dispatched on the last day of Sivan, not at its molad, which is this coming solar eclipse in the Ring of Fire. [Source: Dov bar Leib]
May 20 [Yom Yerushalayim] will see the alignment of the earth, moon, sun and the Pleiades - as well as an Annular Solar Eclipse [see video]
You can read more about this eventful date, and the Mayan Messiah Theory at: Venus Transit and the Star of Moshiach
60 days after this brings us to erev Rosh Chodesh Av - July 19.
July 20 is when Obama's Presidency reaches it's three-and-a-half-year mark: which could refer to Sefer Daniel [where President Obama is hinted to] - see ''time and times and a half of time'' for more on this.
And as Devash just blogged: Sixty days after Shavuot, the London Olympics will begin.
It's just speculation on my part ...... we'll have to wait and see.