Shortly before mine sprouted during the first week of June. Due to rain and colder temps I didn't plant them until July 2. Smaller this year than last so next year I'll sprout the seeds in larger pots so they don't get root-bound in a month. Autos don't like that.
They are my F1 fem seeds so that may have influenced the difference but it was a lot cooler summer so far compared to last year when we had two heat domes during July. Stinkin' hot but the plants really seemed to love it.
Yours are definitely sexually mature by now so it's odd that they aren't showing lots of pre-flowers at least. What strain is it as sativa dominants are slower to begin flowering than indicas and take a lot longer to finish flowering so not a great choice for when you have a shorter season. My first try here almost 20 years ago was with Kali Mist and frost got them soon after they started budding. 14 week flowering time indoors but I wasn't as educated about these things then.