Song: "Don't Say Goodnight (It's Time For Love) (pts. 1 & 2)"
Artist: Isley Brothers
Peak position on the Cashbox Singles chart: #40
Number of weeks on the Cashbox Singles chart: 13
Weekly data:
| Week ending | Rank | Title | Artist | Label |
|---|---|---|---|---|
| March 29, 1980 | 94 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| April 5, 1980 | 86 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| April 12, 1980 | 72 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| April 19, 1980 | 63 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| April 26, 1980 | 55 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| May 3, 1980 | 50 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| May 10, 1980 | 45 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| May 17, 1980 | 41 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| May 24, 1980 | 40 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| May 31, 1980 | 54 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| June 7, 1980 | 60 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| June 14, 1980 | 66 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
| June 21, 1980 | 100 | Don't Say Goodnight (It's Time For Love) (pts. 1 & 2) | Isley Brothers | T-Neck 2290 |
Rankings greater than 100 are from the Cashbox 'Looking Ahead' charts.