Here is my personal view of the DCEU Timeline. Keep in mind, I haven't seen all of them, so this is just the movies I have seen, or at least information from between films.
Continuity in films[]
Batman v Superman: Dawn of Justice (2016)[]
- 18 months after Man of Steel.
Suicide Squad (2016)[]
- 1 year after Batman v Superman: Dawn of Justice.
Justice League (2017)[]
- 2 years after Batman v Superman: Dawn of Justice.
Birds of Prey (2020)[]
- 4 years after Suicide Squad.
Timeline[]
BMoS - Before Man of Steel AMoS - After Man of Steel
0 Years AMoS[]
- Man of Steel
1.5 Years AMoS[]
- Batman v Superman: Dawn of Justice
2.5 Years AMoS[]
- Suicide Squad
3.5 Years AMoS[]
- Justice League
6.5 Years AMoS[]
- Birds of Prey (and the Fabulous Emanicipation of One Harley Quinn)