I firmly believe the tribulation will occur in November.
Here's a fact if you study Jewish history.
Our ancient fathers used to look to the sky to see where the sun and moon were in relation to the fixed stars, in order to know what month they were in.
Aries is the first month of Nisan and the symbol is the RAM or passover ram/lamb. The ancients always started the first month in Aries to kill the passover lamb during this time when the sun was in Aries.
Libra is the 7th Month Tirshri and is the symbol of Judgement or Righteous Justice.
The equinox used to start in Aries, but because the "Precession of the Equinox's" they drift back through time and now they start in Pisces.
Stars are the only heavenly bodies that are fixed. The Sun, Moon, Equinox's, Solstice's and Planets move all over the ecliptic and are not fixed. You HAVE TO HAVE SOMETHING THAT IS FIXED IN ORDER TO HAVE A REFERENCE POINT in the heavens.
Since the sun was in Aries when our ancient fathers started Nisan on the New Moon and the Sun was in Libra during the 7th Month new moon and the stars are fixed unlike everything else....
I don't see why we shouldn't be celebrating the appointed feasts of the LORD in their proper season.
The book of Jubilees says how to identify the seasons according to GOD:
The new moon of the 1st month, the new moon on the 4th month, the new moon of the 7th month and the new moon on the 10th month are the days of remembrance, and the days of the seasons in the 4 divisions of the year.
Notice it doesn't say "equinox" or "Solstice" above to divide the year. This is because Satan has introduced "Tropical Astrology" just recently. Tropical Astrology doesn't take the stars into account. It's just a Sun/Earth Relationship......(equinox's and Solstic's) PAGAN.....which have no fixed position in the heavens for a point of reference.
It goes on the say: "These are written and ordained as a testimony forever. And Noah ordained them for himself as feasts for the generations forever, so that they have become thereby a memorial unto him.
And on the New Moon of the 1st month he was bidden to make for himself an ark, and on that day the earth became dry and he opened the ark and saw the earth.
And on the New Moon of the 4th Month the mouths of the depths of the abysses beneath were closed.
And on the New Moon of the 7th month all the mouths of the abysses of the earth were opened and the waters began to descend into them.
And on the New Moon of the 10th Month the tops of the mountains were seen, and Noah was glad.
And on this account he ordained them for himself as feasts for a memorial forever, and thus are they ordained. And they placed them on the heavenly tables."
Again, our ancient fathers never used the "Equinox's" or "solstice's" to figure out the 4 seasons or 4 divisions in the year.
The month started according to the fixed stars in the heavens when the sun and New Moon was in Aries (RAM/Passover Lamb).
The Equinox's and Solstice's are not in a fixed position and float back through the stars (constellations).
Why shouldn't we celebrate the Lord's feasts on the same time our ancient fathers did? The stars are fixed! Satan cannot tamper with them! But he can give us a New Jewish "Hillel" calendar and a "Gregorian" or "Julian calendar", and everyone will accept that and swallow the lie.
Based on all this....
2010 Nisan = May New Moon
2010 Tishri = November New Moon
2017 Nisan = April New Moon
2017 Tishri = October New Moon
Again, the 4 seasons in the year are observed according to the New Moon on the 1st,4th,7th,and 10th Month.
Man's seasons begin according to the Sun and Equinox instead of the GOD's explanation above.
Man currently looks to flawed calendars that never existed in antiquity to observe the LORD's feasts, thereby being in error by their own ignorance.
Research and truth will set you free. Exercise discernment. Pray for Discernment.