Song: "Heaven Knows"
Artist: Donna Summer with Brooklyn Dreams
Peak position on the Cashbox Singles chart: #4
Number of weeks on the Cashbox Singles chart: 16
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| January 13, 1979 | 73 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| January 20, 1979 | 51 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| January 27, 1979 | 36 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| February 3, 1979 | 22 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| February 10, 1979 | 14 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| February 17, 1979 | 11 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| February 24, 1979 | 7 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| March 3, 1979 | 5 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| March 10, 1979 | 4 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| March 17, 1979 | 4 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| March 24, 1979 | 6 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| March 31, 1979 | 11 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| April 7, 1979 | 16 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| April 14, 1979 | 26 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| April 21, 1979 | 38 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
| April 28, 1979 | 86 | Heaven Knows | Donna Summer with Brooklyn Dreams | Casablanca 959 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.