Today is Rosh Hashanah meaning "The Head of the Year":

Rosh Hashanah one day in Israel is 2 everywhere else. It started at sunset yesterday and ends tonight when the first 3 stars come out. Instituted by God, this is one of the most important events in the year with strong connections to the Messiah. It is a High Sabbath what we call a High Holy Day and as such I will repeat the candle-lighting at Dinner (Vespers) and add the Closing of the Sabbath at Supper (Compline) when the stars will be out, and the High Sabbath ends.

This feast is in a bit like Ash Wednesday, it marks the beginning of what they call the 10 Days of Awe, concluding with Yom Kippur. A shorter version of our Lent. Yom Kippur is the Jewish Day of Atonement. This is when they cleanse themselves of all last years sins, so repentance is a big part of the Holiday. But you are meant to be joyful - the key: God is compassionate and merciful, therefore we must be compassionate and merciful in forgiving ourselves, because God forgives us, and therefore we can more easily forgive others.

“Selichot” or prayers and poems of repentance are added to their daily liturgy before the start of Rosh Hashanah and continue until Yom Kippur. They lay a special emphasis on God’s traditional “Thirteen Attributes.”

The heart of Rosh Hashanah itself is the blowing of the shofar. If you have ever heard a shofar blown in person and not just on a video, you will understand - in its actual presence the sound reverberates through the air and is not just heard but felt, up through your heels and your whole body. And it is this sound that will announce the time of the Great Day of the Lord.”

This is where the connection to the Messiah comes into it. The prophecies of Judaism say that the Messiah will appear on The Feast of Trumpets, by their year 6000 (2240). They are not wrong, what they are actually describing is the 2nd coming, the Return of Jesus to the Earth, so while we do not know the day (because this is a movable feast for us) or the hour of his return - we do know it will be before 2240, Jesus fulfills prophecies! Happy Rosh Hashanah!