As the text card at the very beginning of the film clearly states, the events in the movie take place starting in November 2019.

So one can assume that a replicant “born” on January 8, 2016 would start to slowly fall apart during the timespan from November 2019 to the beginning of January 2020.

[![Date and location at the beginning of “Blade Runner.”][1]][1]


  [1]: https://i.sstatic.net/TB70C.png