calculate amount of days by name

[RachelMads02]

hi guys, my name is rachel, i have a quick question, hope someone can help:

I have a workbook where:

Column A = Date such as 2/1/03
Column B = Day that corresponds with Column A (2/1/03 = Wednesday)
Column D = Cell D2 = Total amount of Wednesdays from cell range B2:B17
Column E = Cell E2 = Total amount of Saturdays from cell range B2:B17

I know how to calculate the sum of each, but my problem is when i run into duplicates that correspond to the date such as:

2/1/03
2/22/03
7/9/03
10/25/03
12/25/03

These dates have duplicates so i don't want to count the corresponding day twice.

There should be 7 Wednesdays and 4 Saturdays.

Can anyone provide a formula for this, in cells D2 & E2? Thanks in advance to anyone who takes the time to help me!!