You can mark those calendars in advance as the Academy of Motion Picture Arts and Sciences and ABC have declared the show dates for the years 2016, 2017 and 2018.
The 88th, 89th and 90th Academy Awards would be aired live on ABC on February 28, 2016, February 26, 2017, and March 4, 2018, respectively.
In addition to that, the organization has also announced key dates for the coming 2015-16 Oscar season.