Yes, we Do know when the tribulation will end and about when it will begin....
we just dont know what year !!!
Jesus is returning to fulfil the feast of Tabernacles ... Daniel ch 12: 11 & 12 says His return will be 1335 days after Mid Trib and 45 days after the Abomination of desolation on the 1290th day after mid trib...
Jesus also said He will return to Tabernacle with His people Israel...
 
Lewis B