Season of the Deep, just like any other season in Destiny 2 has a few dates that are more important than others. Here is a list of them.
Bungie announced the major dates for Destiny 2 Season of the Deep, including the first Iron Banner, dungeon start, first Trials, GM Nightfalls and the Solstice event.
Keep in mind that some of these dates will overlap and some have already kicked off but did not necessarily finish.
There is also the matter of Iron Banner interaction with Trials to be aware of.
Ghosts of the Deep goes live on May 26, 2023, which is also the day the first Trials of Osiris of the season kicks off. Whether you are a PvE or PvP enthusiast, there are a whole lot of goodies waiting for you.
Following that, there is going to be the first Iron Banner of the season on May 30, 2023, so keep in mind that Trials will not be active until the event wraps up.
Once Saladin has had his fun, we will have a normal week, after which the Grandmaster Nightfalls will kick in on June 13, 2023.
There will be a period of things going the way they usually do after that and the Solstice event will return on July 18, 2023.
There is no new raid in the season so that concludes the major dates until Season 22.