>> But ye, brethren, are not in darkness, that that day should overtake you as a thief. <<
That does not say that they shall know the time. If it did, it would contradict directly the words of Jesus, who said you will not know the day nor the hour. It only means that they will be prepared, because they will remain always vigilant.
Then Yeshua contradicts what is in 1 Thess...both have to be true, neither one can be ignored...
And no one DOES know the day or the hour, because that particular Holy Day is the only one depending upon the new moon.
And one does not know the season (which Jubilee), but if one is watchful, and knows the prophecies, one will know when the signs point to a particular jubilee (probably the Grand Jubilee coming 14 years from now).
If one studies the Holy Days of YHWH (done by keeping them), one will know. These things are rehearsals. They are prophetic. And just as most Jews missed the coming of Messiah, so too will the Christians be caught unawares, because they do not keep the commandments of YHWH.
Merry X-mas and Happy Ishtar.