It was a Thursday.
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.
April 19, 1999 was a Monday.
April 17, 1999 was a Saturday.
April 12 1999 was a Monday.
April 20 1999 was a Tuesday.
Thursday
Monday
It was a Saturday.
April 10th, 1999 fell on a Saturday.
April 30th, 1999 fell on a Friday.
April 27, 1999 fell on a Tuesday.
April 1, 1999 fell on a Thursday.