The Biblical Calendar

This web site provides a study on the biblical calendar and a holy day schedule for upcomming years based upon the conclusions of the study.

A concise biblical calendar study is now available that is much shorter than the documents below.
Download the Concise Biblical Calendar Study updated February 8th, 2013.

The following study on the biblical calendar provides well documented information regarding how the calendar originally functioned.

Download the PDF version of the Treatise on the Biblical Calendar by Herb Solinsky, last revised on April 8, 2009.

An Abridged Biblical Calendar Study updated January 4, 2013 is now available: Download ABC2.pdf

A Study concerning Barley and the Calendar updated October 13, 2014 is now available: Download Barley_and_Calendar.pdf
For calendar questions, please contact Herb Solinsky at

In recent years, sighting of the new crescent from the southern part of Israel near the western border has been prevented by the Israeli Defense Forces due to safety problems. Therefore, it is assumed the crescent won't be seen on the 7th month until the later part of the 15th, causing the first day of the 7th month to be on September 16, 2015 as shown in the table.

Genesis 1:14-18             Psalm 104:19
Holy Day Schedule for 2010-2020
Year First day of First of Month Feast of Unleavened Breaed Pentecost Feast of Trumpets Day of Atonement Feast of Tabernacles Last Great Day
2010 Friday, April 16th Friday, April 30th - Thursday, May 6th Sunday, June 20th Sunday, October 10th Tuesday, October 19th Sunday, October 24th - Satudray, October 30th Sunday, October 31st
2011 Tuesday, April 5th Tuesday, April 19th - Monday, 25th Sunday, June 12th Friday, September 30th Sunday, October 9th Friday, October 14th - Thursday, October 20th Friday, October 21st
2012 Saturday, March 24th Saturday, April 7th - Friday, April 13th Sunday, May 27th Tuesday, September 18th Thursday, September 27th Tuesday, October 2nd - Monday, October 8th Tuesday, October 9th
2013 Friday, April 12th Friday, April 26th - Thursday, May 2nd Sunday, June 16th Monday, October 7th Wednesday, October 16th Monday, October 21st - Sunday, October 27th Monday, October 28th
2014 Tuesday, April 1st Tuesday, April 15th - Monday, April 21st Sunday, June 8th Saturday, September 27th Monday, October 6th Saturday, October 11th - Friday, October 17th Saturday, October 18th
2015 Sunday, March 22nd Sunday, April 5th - Saturday, April 11th Sunday, May 24th Wednesday, September 16th Friday, September 25th Wednesday, September 30th - Tuesday, October 6th Wednesday, October 7th
2016 Saturday, April 9th Saturday April  23rd - Friday April 29th Sunday, June 12th Monday, October 3rd Wednesday, October 12th Monday, October 17th - Sunday, October 23rd Monday, October 24th
2017 Thursday, March 30th hursday, April 13th, Wednesday, April 19th Sunday, June 4th Friday, September 22nd Sunday, October 1st Friday, October 6th - Thursday, October 12th Friday, October 13th
2018 Wednesday, April 18th Wednesday, May 2nd - Tuesday, May 8th Sunday, June 24th Thursday, October 11th Saturday, October 20th Thursday, October 25th - Wednesday, October 31st Thursday, November 1st
2019 Sunday, April 7th Sunday, April 21st - Saturday, April 27th Sunday, June 9th Monday, September 30th Wednesday, October 9th Monday, October 14th - Sunday, October 20th Monday, October 21st
2020 Thursday, March 26th Thursday, April 9th - Wednesday, April 15th Sunday, May 31 Saturday, September 19th Monday, September 28th Saturday, October 3rd - Friday, October 9th Saturday, October 10th

The dates in this schedule are derived from astronomical calculation using the luni-solar calendar that is based on the sighting of the cresent from Israel, as detailed in the study available above.