The question needs to be more precise
January 30th, 1966 fell on a Sunday. The following year, it fell on a Monday.
Sunday Morning - 1966 was released on: USA: 1966
March 6, 1966 was a Sunday.
August 28 1966 was a Sunday.
May 8 1966 was on a Sunday.
April 10, 1966 fell on a Sunday.April 10 1966 was on a Sunday.
March 20, 1966 fell on a Sunday.
February 6, 1966 fell on a Sunday.
November 27th 1966 was a Sunday.
The days for August 1966 were as follows: Monday 1 August 1966 Tuesday 2 August 1966 Wednesday 3 August 1966 Thursday 4 August 1966 Friday 5 August 1966 Saturday 6 August 1966 Sunday 7 August 1966 Monday 8 August 1966 Tuesday 9 August 1966 Wednesday 10 August 1966 Thursday 11 August 1966 Friday 12 August 1966 Saturday 13 August 1966 Sunday 14 August 1966 Monday 15 August 1966 Tuesday 16 August 1966 Wednesday 17 August 1966 Thursday 18 August 1966 Friday 19 August 1966 Saturday 20 August 1966 Sunday 21 August 1966 Monday 22 August 1966 Tuesday 23 August 1966 Wednesday 24 August 1966 Thursday 25 August 1966 Friday 26 August 1966 Saturday 27 August 1966 Sunday 28 August 1966 Monday 29 August 1966 Tuesday 30 August 1966 Wednesday 31 August 1966
November 13 1966 was a Sunday.
May 29 1966 was a Sunday.