When Does "Dark Blood" #1 (2021) Take Place?
"Dark Blood" #1 is a science fiction? comic-book written by LaToya Morgan that released July 21st, 2021. So when is "Dark Blood" #1 set?
It takes place in the year:
We know this because it includes World War II flashbacks and therefore must take place after 1939 AD, the start of the war.

1956 AD
We know this because it includes World War II flashbacks and therefore must take place after 1939 AD, the start of the war.
More specifically, issue #2 shows Avery Aldridge reading a "Vale Junction Courier" newspaper with the headline "BUS BOYCOTT IN MONTGOMERY BURDENS CITY" and Reverend Martin Luther King Jr. famously orchestrated the African-American community in a citywide protest boycott of the public transit bus system in Montgomery, Alabama in the real world over a full year: from December 5th, 1955 AD to December 20th, 1956 AD. (It can't be the 1900 AD Montgomery public transit boycott because of the World War II flashbacks.) This scene takes place 6 months before the majority of this issue. If the Montgomery bus boycott happened at the same time in the fictional world (diegesis) of "Dark Blood", it is May of 1956 AD, at the earliest.
12.1955 + 6 months = 5.1956.
(HOWEVER, the issue opens immediately with free-floating text that tells us it is "The night of the variance. Alabama, 1955." This can be seen as erroneous or an indication the bus boycott happened earlier in the fictional world (diegesis) of "Dark Blood". If this omniscient text is to be believed it is 1955 AD.)
Additionally, the issue includes a World War II flashback broken into two parts. Both parts begin with free-floating text reading: "Ten years before the variance." Other text tells us "the variance" occurs in 1955 AD. So these flashback scenes take place in 1945 AD.
1955 - 10 = 1945.
Finally, the comic ends with a one-page epilogue. The second panel of the page contains more free-floating text identifying it as "Six months before the variance." The second issue includes a section with the same time setting text in which the newspaper headline about the Montgomery bus boycott protest is seen. So the epilogue is in late 1955 AD or early 1956 AD.