The Battle of Popasna started on 2022 April 7th, when the AFU reported that the RUAF was planning to storm the town. To keep things short I won't upload an image of that position, it is obvious what was the original setup. The same day the Russians pushed in south of the town, towards the village of Novozvanivka.
It took a month to capture Popasna in full. First screenshot depicts this, it was on May 8th.
Then the blooming started. The RuAF expanded around town, I think the screenshot of May 21st captures this well.
June 18th shows a fat bulb, and on 22nd the two frontline in the NE closed to together. I think this could be the endpoint of the bloom as the front basically gets shortened, continuous and stable. From here they pushed to Soledar (perhaps that would be good to check as well) and then to Bakhmut.