As an additional input into the date of Rosh Hashana 2017, this is also a Jubilee year. Jerusalem was retaken by Israel in 1967, so 50 years later is 2017. Jubilee years hold high significance in YHWH's Torah and plans, as we see them throughout history. 1917 Balfour Declaration was a jubilee from 1967.

If Rosh Hashana of 2017 is the sign and TIME of Yashuah's return, then next spring is the beginning of the 3 1/2 years of GREAT TROUBLE.