Reading more about Shavout on Wikipedia it shows that it will be good to look at all the dates for Shavout and also Pentecost (I’d suggest May 22nd – May 27th)

Sivan 6 is May 23rd (22nd would be the eve, so watch there too!)  22 is the number for seperation and judgment…

Sivan 7 is May 24th, which is also the 144th day of the year.  24 being the number for heavenly government and 144 having the same implication.  

If it follows on the Sabbath (Shabbat) then Saturday would be possible and also Sunday as the Christian/Church observance of Pentecost.

Giving of the Torah
While most of the Talmudic Sages concur that the Torah was given on the sixth of Sivan; R. Jose holds that it was given on the seventh of that month. According to the classical timeline, the Israelites arrived at the wilderness of Sinai on the new moon (Ex. 19:1) and the Ten Commandments were given on the following Shabbat. The question of whether the new moon fell on Sunday or Monday is undecided (Talmud, tractate Shabbat 86b). In practice, Shavuot is observed on the sixth day of Sivan in Israel and a second day is added in the Jewish diaspora in keeping with a separate rabbinical ruling that applies to all non-fast biblical holidays, called Yom Tov Sheini Shel Galiyot ("second-day holiday observance in the Jewish diaspora").

 Watch!!!!!!

Blessings, 

Tony