I am writing this as an update (edit) to my original post: the Feast of Pentecost and the Rapture of the Church concerning the date of Pentecost (Shavuot) 2008.
In my original post, I began counting the 50 days, from the Sabbath between the Passover (April 20th) and First Fruits (April 27) as opposed to the Sabbath (Saturday) which follows the Feast of First Fruits. Therefore, I came up with the date of June 8, 2008 for Pentecost. The actual date is Sunday, June 15, 2008.
According to Leviticus 23:15-16, we are to count from the morrow after the first Sabbath which follows the Passover, which is the feast of First Fruits. There are to be 7 Sabbaths completed, even unto the morrow (the day after the Sabbath). [Seven Sabbaths after First Fruits]
And ye shall count unto you from the morrow after the sabbath, from the day that ye brought the sheaf of the wave offering; seven sabbaths shall be complete: Even unto the morrow after the seventh sabbath shall ye number fifty days [*Omer]; and ye shall offer a new meat offering unto the LORD.
Passover was on April 20, 2008
Feast of First Fruits was on April 27, 2008
The seven Sabbaths (Saturdays) are:
1. May 3, 2008 (begin counting the *Omer)
2. May 10, 2008
3. May 17, 2008
4. May 24, 2008
5. May 31, 2008
6. June 7, 2008
7. June 14, 2008
The morrow (day after) the 7th Sabbath (Saturday) June 14, 2008 is (Sunday) June 15, 2008. That means that June 15, 2008 is Pentecost (Shavuot).