"Nite and Day" is a 1988 single by Al B. Sure! from the Warner Bros. album In Effect Mode. It reached number seven on the Hot 100 and number one on the Hot Black Singles chart.
The song was executive produced by Benny Medina and Andre Harrell. It was produced, arranged and musically programmed by Kyle West for Key West International, co-produced and written by Al B. Sure! for Al B. Sure! International and Uptown Enterprises. The song was recorded at Unique Recording Studios. The single earned him a nomination for a Grammy Award for Best Male R&B Vocal Performance at the 31st Grammy Awards in 1989, losing to ''Introducing the Hardline According to Terence Trent D'Arby'' by Terence Trent D'Arby.
- Category: 1988 singles
- Category: Debut singles
- Category: Songs written by Al B. Sure!
- album: In Effect Mode
- genre: Contemporary R&B
- genre: New jack swing
- musicalArtist: Al B. Sure!
- musicalBand: Al B. Sure!
- performer: Al B. Sure!
- record label: Warner Bros. Records
- recordLabel: Warner Bros. Records
- subjectof: Hip-Hop Songs number-one singles
- subsequentWork: Off on Your Own (Girl)
- writer: Al B. Sure!