It was a Thursday.
The 7th April 1977 was a Thursday.
May 7 1977 was on a Saturday.
That will depend on what day of the week the 1st of April is on. Whatever day of the week it is on, if you are taking the 8th of April as being 7 days later, then it will be on the day of the week after the day of the week of the 1st of April. So, for example, if the 1st of April was on a Saturday, then the 8th of April would be on a Sunday.
November 7 1977 was a Monday.
June 7, 1977, was a Tuesday.
April 7 2010 was a Wednesday.
April 7, 1957 was a Sunday.
April 7 1998 was a Tuesday.
7 April 2008 was a Monday.
April 7, 2005 was a Thursday.
April 7, 1995 fell on a Friday.
April 7, 1975 fell on a Monday.