If the crescent moon is seen in Jerusalem, the new year begins on Friday, September 18, 2020 at 6:40 PM IDT (10:40 AM CDT) and ends at twilight on Sunday, September 20, 2020 at ~6:38 PM IDT (~10:38 AM CDT). September 2020 is in a possible seven year rapture window (~2019-2026) as God prepares the world for the seven years of Tribulation.

Jewish Feast Dates

The sun, moon and stars are not only used to tell time but also for prophetic signs. Those signs are linked to Jewish holy days. Key days to watch are the 9th of Av (Kadesh Barnea), Trumpets, Atonement and Tabernacles. Below is a list of Jewish holy days, the future dates of the Rapture, beginning of the Tribulation, Second Coming and reign of Jesus Christ. These dates are calculated dates and must be confirmed by observation. Jewish Calendar.

God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs, and for seasons, and for days, and years (Genesis 1:14).

Jesus Christ was born ~7-1 BC and died ~27-33 AD, then ~2027-2033 could be the Second Coming of Jesus Christ. Subtract seven years and we are in a possible seven year rapture window (2019-2026) as God prepares the world for the seven years of Tribulation. Since we are at the end of the Church Age, watch Israel, China, the European Union, Russia and Iran and the preparation of the Covenant and Tribulation in Revelation but more importantly, watch for Jesus.

Jewish tradition says a new month begins after two witnesses see the crescent new moon, testify before the Sanhedrin who declare the beginning of the new month. Messengers set beacon fires on hills throughout Israel. This happens about a day after the astronomical new moon. But Rosh Hashanah is the beginning of a new month and new civil year. Distant communities celebrate Trumpets on two possible days. The shofar sounds one hundred times during the Jewish service. Yom Teruah or the Feast of Trumpets is the Rapture day.

The Feast of Trumpet Is the Rapture Day

1.  Day of Blowing the Shofar or Ram's Horn

Yom Teruah or the Feast of Trumpets is on the first day of the seventh month of Tishri. Passover, Unleavened Bread, Firstfruits and Weeks/Pentecost were prophesies fulfilled by Jesus Christ on those days so Trumpets, Atonement and Tabernacles will be fulfilled.

In the seventh month, in the first day of the month, shall you have a sabbath, a memorial of blowing of trumpets, an holy convocation. You shall do no work: but you shall offer an offering made by fire unto the Lord (Leviticus 23:24-25).

2.  Day of Rosh Hashanah, the New Year

The Feast of Trumpets is Rosh Hashanah, the Jewish civil new year which begins on a new moon in the summer/fall (September 4-October 6). After the night's prayer service, a special greeting is used: "Ketiva ve-chatima tovah" or "May you be written and sealed for a good year".

Blow the trumpet in the new moon, in the time appointed, on our solemn feast day (Psalm 81:3).

3.  Days of Creation and Birth of Adam

The Feast of Trumpets is the Jewish celebration of the creation of the world and Adam. The Hebrew name Genesis is Beresheet but right to left (teeshereB) is the 1st of Tishri. The month of Tishri is the beginning (Creation) and the end with Trumpets (Rapture), Atonement (Second Coming) and Tabernacles (Reign of Jesus Christ).

On the 1st of Tishri [beginning, Aleph b'Tishri] God created the heavens and the earth (Genesis 1:1).

4.  Day of the Awakening Blast and Day of Shouting

The Feast of Trumpets is the day of shouting, the resurrection of the dead and the rapture of believers. God rescues those in Christ from imminent danger before the Tribulation.

For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first [resurrection]: Then we which are alive and remain shall be caught up [rapture] together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord (1 Thessalonians 4:16-17).

On the Feast of Trumpets, the prayer service includes a hundred blasts of the shofar with four sounds: Tekiah (1 long), Shevarim (3 medium), Teruah (9 short) and Tekiah Gedolah (1 extra long). Paul said when the last trump (Tekiah Gedolah) sounds on the Feast of Trumpets, we will transform from life to eternal life.
 
In a moment, in the twinkling of an eye, at the last trump [Tekiah Gedolah]: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed (1 Corinthians 15:52).

6.  Day That No One Knows

The Feast of Trumpets can occur after the 29th or 30th day of Elul, so no one knows the day or hour until the crescent moon appears in the afternoon sky. Jesus uses a Jewish figure of speech to tell us the day of the Rapture is the Feast of Trumpets.

But of that day and hour knows no man (Matthew 24:36).

7.  Day of the Marriage Feast of the Lamb

The Feast of Trumpets is the traditional Jewish wedding ceremony. Both Jacob and Samson's weddings last one week (Genesis 29:26-28, Judges 14:12).  Christ and His Church's ceremony lasts seven years.

In my Father's house are many [rooms]: if it were not so, I would have told you. I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you unto myself; that where I am, there you may be also (John 14:2-3).

God tells us what is going to happen before it happens and when. He describes the Rapture by Jewish traditions on the Feast of Trumpets, the Jewish New Year. Since God revealed to us the days of the Rapture but not the year, four horses, five trumpets and other prophesies describe important events that occur before the Tribulation.

Specific years are mentioned. This is not a prediction of the year of the Rapture or Second Coming. Put all of what is written in context with the rest of the book. After God's time, seven churches, four horses, seven trumpets and other End Time prophecies are combined, we can better understand God's plan for our time.

References: 21st Century Revelation: World Wars, Iraq Wars & End War Chapter 11 - The Feast of Trumpets, Chapter 12 - Fall Jewish Feasts, Appendix D - Jewish Feast Dates, Rosh Hashanah