September is a month of great importance throughout Biblical History. It is a season of repentance and restoration. For thousands of years, the Holy Days have pointed to the Messiah, Jesus Christ, and His return. So, it is important to understand the calendar to better understand the signs and the times. Here is a brief summary of what to expect this month:
September 14: Rosh Hashanah (Feast of Trumpets) (begins evening of September 13 - with a partial solar eclipse prior to the feast beginning) – this will end the seventh year of the Shemitah. This seventh year comes to an end on September 13, 2015 (elul 29), only to be immediately followed by a Jubilee (50th) year beginning September 14, 2015.
Jews still observe Rosh Hashanah as their New Year, which marks the beginning of what is alternatively called the "Ten Days of Repentance," or the "Days of Awe." These are the ten days of introspection and preparation for the Day of Atonement (Yom Kippur)
September 23: Yom Kippur (Day of Atonement) (begins evening of September 22).
September 28 – October 4: Sukkot (Feast of Tabernacles) (begins evening of September 27) A Blood Moon will occur on September 28 (final of the 4 blood moons during the Shemitah year).
See Exodus 23, Leviticus 23-25 and Deuteronomy 15-16 for references.