Great Tribulation in my view ended in 1999 AD which was a symbolic sign of the coming end.
I superimpose the horrible events from 1914 AD - 1944 AD upon the period 1984 AD -1999 AD.
The first world war : 1914 AD - 1919 AD = 5 years.
The Great Depression of 1929 AD - 1932 AD = 3 years.
The Second World War : 1938 AD - 1945 AD = 7 years .
1984 AD + 7 years + 3 years + 5 years = 1999 AD.
In the year 1999 AD was a solar eclipse as as a sign and in 2000 AD a lunar eclipse as a sign and 12 stars falling down are 12 years after.
Matthew 24.29-30.
The first star fell in 2000 AD in the fall which means the first year of 12 years remaining passed away .Then we have the second star falling in 2001 AD with the last star falling in the fall in 2011 AD.
1999 AD + 12 years as 12 stars falling = 2011 AD.
Harold Camping of the Family Radio teaches the Great Tribulation began on May,21,1988 AD when God put Satan over all local church congregations which must be abandoned by those who want to be saved in 2011 .
May,21,1988 AD - May,21,2011 AD makes the period of Great Tribulation according to Harold Camping from http://www.familyradio.com .
In his view the Grat Tribulation will last 23 years exactly as to the single day precisely .
Note on alt.religion.jehovahs-witn which is my favorite discussion group (on usenet ) I have a period of 23 years from
2011 AD to 2034 AD.
2300 days from Daniel 8.14 the best way were placed by Harold Camping inmy view:
May,21,1988 AD + "2300 days" which are included in the 23 -year Great Tribulation leads to September ,7,1994 AD which began a jubilee year
and the Latter Rain Harvest began at that time : the final seperation of wheat from tares.
On this one point about right placing of 2300 days Harold Camping beat up me and all Jehovah's Witnesses .I think he is the only person on the face of the earth that got it right the best way.