Taking just the 20th and 21st centuries, the 23rd of September is on a Thursday in 1909, 1915, 1920, 1926, 1937, 1943, 1948, 1954, 1965, 1971, 1976, 1982, 1993, 1999, 2004, 2010, 2021, 2027, 2032, 2038, 2049, 2055, 2060, 2066, 2077, 2083, 2088, 2094 and 2100.
September 23 1943 was a Thursday.
September 23 2010 was a Thursday.
September 23, 1954 fell on a Thursday.
September 23, 2010 has come and passed. It was on a Thursday.
September 23, 1982 fell on a Thursday.
it is to start on the 23rd of September 2010 in the UK
Thursday.
Thursday
Thursday.
It was a Thursday.
23rd September 1971, was a Thursday.
Arthur's Day, as it was known, ran from 2009 to 2013, but no longer happens. The dates for it were: Thursday 24 September 2009 Thursday 23 September 2010 Thursday 22 September 2011 Thursday 27 September 2012 Thursday 26 September 2013