Bellow you will find a list of jewish holidays for the secular year 280. You can use the links bellow to find the Jewish Holidays for any given year
1/1/280 Thu, 10th of Tevet, 4040
1/1/280 Thu, Asara B'Tevet
1/21/280 Wed, 1st of Sh'vat, 4040
1/21/280 Wed, Rosh Chodesh Sh'vat
2/4/280 Wed, 15th of Sh'vat, 4040
2/4/280 Wed, Tu B'Shvat
2/14/280 Sat, 25th of Sh'vat, 4040
2/14/280 Sat, Shabbat Shekalim
2/19/280 Thu, 30th of Sh'vat, 4040
2/19/280 Thu, Rosh Chodesh Adar
2/20/280 Fri, 1st of Adar, 4040
2/20/280 Fri, Rosh Chodesh Adar
2/28/280 Sat, 9th of Adar, 4040
2/28/280 Sat, Shabbat Zachor
3/3/280 Wed, 13th of Adar, 4040
3/3/280 Wed, Ta'anit Esther
3/3/280 Wed, Erev Purim
3/4/280 Thu, 14th of Adar, 4040
3/4/280 Thu, Purim
3/5/280 Fri, 15th of Adar, 4040
3/5/280 Fri, Shushan Purim
3/13/280 Sat, 23rd of Adar, 4040
3/13/280 Sat, Shabbat Parah
3/20/280 Sat, 1st of Nisan, 4040
3/20/280 Sat, Rosh Chodesh Nisan
3/20/280 Sat, Shabbat HaChodesh
3/27/280 Sat, 8th of Nisan, 4040
3/27/280 Sat, Shabbat HaGadol
4/2/280 Fri, 14th of Nisan, 4040
4/2/280 Fri, Ta'anit Bechorot
4/2/280 Fri, Erev Pesach
4/3/280 Sat, 15th of Nisan, 4040
4/3/280 Sat, Pesach I
4/4/280 Sun, 16th of Nisan, 4040
4/4/280 Sun, Pesach II
4/5/280 Mon, 17th of Nisan, 4040
4/5/280 Mon, Pesach III (CH''M)
4/6/280 Tue, 18th of Nisan, 4040
4/6/280 Tue, Pesach IV (CH''M)
4/7/280 Wed, 19th of Nisan, 4040
4/7/280 Wed, Pesach V (CH''M)
4/8/280 Thu, 20th of Nisan, 4040
4/8/280 Thu, Pesach VI (CH''M)
4/9/280 Fri, 21st of Nisan, 4040
4/9/280 Fri, Pesach VII
4/10/280 Sat, 22nd of Nisan, 4040
4/10/280 Sat, Pesach VIII
4/18/280 Sun, 30th of Nisan, 4040
4/18/280 Sun, Rosh Chodesh Iyyar
4/19/280 Mon, 1st of Iyyar, 4040
4/19/280 Mon, Rosh Chodesh Iyyar
5/2/280 Sun, 14th of Iyyar, 4040
5/2/280 Sun, Pesach Sheni
5/6/280 Thu, 18th of Iyyar, 4040
5/6/280 Thu, Lag B'Omer
5/18/280 Tue, 1st of Sivan, 4040
5/18/280 Tue, Rosh Chodesh Sivan
5/22/280 Sat, 5th of Sivan, 4040
5/22/280 Sat, Erev Shavuot
5/23/280 Sun, 6th of Sivan, 4040
5/23/280 Sun, Shavuot I
5/24/280 Mon, 7th of Sivan, 4040
5/24/280 Mon, Shavuot II
6/16/280 Wed, 30th of Sivan, 4040
6/16/280 Wed, Rosh Chodesh Tamuz
6/17/280 Thu, 1st of Tamuz, 4040
6/17/280 Thu, Rosh Chodesh Tamuz
7/4/280 Sun, 18th of Tamuz, 4040
7/4/280 Sun, Tzom Tammuz
7/16/280 Fri, 1st of Av, 4040
7/16/280 Fri, Rosh Chodesh Av
7/24/280 Sat, 9th of Av, 4040
7/24/280 Sat, Shabbat Chazon
7/24/280 Sat, Erev Tish'a B'Av
7/25/280 Sun, 10th of Av, 4040
7/25/280 Sun, Tish'a B'Av
7/31/280 Sat, 16th of Av, 4040
7/31/280 Sat, Shabbat Nachamu
8/14/280 Sat, 30th of Av, 4040
8/14/280 Sat, Rosh Chodesh Elul
8/15/280 Sun, 1st of Elul, 4040
8/15/280 Sun, Rosh Chodesh Elul
9/12/280 Sun, 29th of Elul, 4040
9/12/280 Sun, Erev Rosh Hashana
9/13/280 Mon, 1st of Tishrei, 4041
9/13/280 Mon, Rosh Hashana 4041
9/14/280 Tue, 2nd of Tishrei, 4041
9/14/280 Tue, Rosh Hashana II
9/15/280 Wed, 3rd of Tishrei, 4041
9/15/280 Wed, Tzom Gedaliah
9/18/280 Sat, 6th of Tishrei, 4041
9/18/280 Sat, Shabbat Shuva
9/21/280 Tue, 9th of Tishrei, 4041
9/21/280 Tue, Erev Yom Kippur
9/22/280 Wed, 10th of Tishrei, 4041
9/22/280 Wed, Yom Kippur
9/26/280 Sun, 14th of Tishrei, 4041
9/26/280 Sun, Erev Sukkot
9/27/280 Mon, 15th of Tishrei, 4041
9/27/280 Mon, Sukkot I
9/28/280 Tue, 16th of Tishrei, 4041
9/28/280 Tue, Sukkot II
9/29/280 Wed, 17th of Tishrei, 4041
9/29/280 Wed, Sukkot III (CH''M)
9/30/280 Thu, 18th of Tishrei, 4041
9/30/280 Thu, Sukkot IV (CH''M)
10/1/280 Fri, 19th of Tishrei, 4041
10/1/280 Fri, Sukkot V (CH''M)
10/2/280 Sat, 20th of Tishrei, 4041
10/2/280 Sat, Sukkot VI (CH''M)
10/3/280 Sun, 21st of Tishrei, 4041
10/3/280 Sun, Sukkot VII (Hoshana Raba)
10/4/280 Mon, 22nd of Tishrei, 4041
10/4/280 Mon, Shmini Atzeret
10/5/280 Tue, 23rd of Tishrei, 4041
10/5/280 Tue, Simchat Torah
10/12/280 Tue, 30th of Tishrei, 4041
10/12/280 Tue, Rosh Chodesh Cheshvan
10/13/280 Wed, 1st of Cheshvan, 4041
10/13/280 Wed, Rosh Chodesh Cheshvan
11/11/280 Thu, 1st of Kislev, 4041
11/11/280 Thu, Rosh Chodesh Kislev
12/4/280 Sat, 24th of Kislev, 4041
12/4/280 Sat, Chanukah: 1 Candle
12/5/280 Sun, 25th of Kislev, 4041
12/5/280 Sun, Chanukah: 2 Candles
12/6/280 Mon, 26th of Kislev, 4041
12/6/280 Mon, Chanukah: 3 Candles
12/7/280 Tue, 27th of Kislev, 4041
12/7/280 Tue, Chanukah: 4 Candles
12/8/280 Wed, 28th of Kislev, 4041
12/8/280 Wed, Chanukah: 5 Candles
12/9/280 Thu, 29th of Kislev, 4041
12/9/280 Thu, Chanukah: 6 Candles
12/10/280 Fri, 1st of Tevet, 4041
12/10/280 Fri, Rosh Chodesh Tevet
12/10/280 Fri, Chanukah: 7 Candles
12/11/280 Sat, 2nd of Tevet, 4041
12/11/280 Sat, Chanukah: 8 Candles
12/12/280 Sun, 3rd of Tevet, 4041
12/12/280 Sun, Chanukah: 8th Day
12/19/280 Sun, 10th of Tevet, 4041
12/19/280 Sun, Asara B'Tevet