Shavout is the middle feast of 7 feasts.
Shavout is the middle feast of 3 harvest feasts.
As it's written in 1 Corinthians 15:22-24, there are 3 turns, and the middle one should be Shavout.
"For as in Adam all die, so in Christ all will be made alive. But each in turn: Christ, the firstfruits;
then, when he comes, those who belong to him. Then the end will come, when he hands over
the kingdom to God the Father after he has destroyed all dominion, authority and power."
The Total Solar Eclipse representing Calamity occurred on 3/20/15 which was the mid-point of the Tetrad.
Shavout is the middle feast between Passover and Tabernacle.
Was it a hint that Calamity will happen on Shavout 3 years later from the Tetrad?
5/28(Shavout) happens to be the full moon of the 3rd month and Memorial Day.
No one knows the day or the hour, but it's very close.