With all the talk of 21 I was looking at http://www.betemunah.org/feasts.html
On Nissan 21 this is what his study says
This is the day God will destroy the wicked and baptize the righteous with fire. Matthew 3:11, 2 Peter 3:3-16, TC
21 means the seventh day With so many calendars out there we will see when Nissan 21 is my belief is this Saturday but could be Monday/Tuesday Jerusalem time we would be about 8 hours behind.
Thank you John!