My guess from what I have read would be from 1821 - 1969. DB
19 April 1969 fell on a Saturday.
August 23, 1969 was a Saturday.
9th August 1969 was a Saturday.
June 28 1969 was a Saturday.
August 9, 1969 was a Saturday.
April 19, 1969 fell on a Saturday.
July 26, 1969 fell on a Saturday.
June 7, 1969 fell on a Saturday.
August 16, 1969 fell on a Saturday.
13 of September 1969 was a Saturday.
5 July 1969 was a Saturday.