For either a moderator or anyone who has been keeping track:
How often or how regular are the hardcore/no-AT weekends? Is there a set schedule? Or perhaps would anyone happen to have a list of dates of the previous weekends? I want to try to sync my playing and commentary with these, but life makes it so having prior knowledge really helps with scheduling. Thanks!
I've tried to keep track of this event. Looks like it's time to put my logs together...
...Oops! I'm missing dates of first few announced events. But they were announced, dates can be found. (News Archive on the Wiki, Announcements Forum, Spiral Knights News on Steam)
Other occurences (DD.MM.YYYY):
09. - ??.06.2017
14. - 16.07.2017
12. - 13.08.2017
08. - 11.09.2017
29.09. - 02.10.2017
20. - 23.10.2017
??. - 13.11.2017
06.01.2018
05. - 11.02.2018
12. - 18.03.2018
27.04. - 03.05.2018
These are all dates I can offer. They don't necessarily match the real beginning/end dates of Hardcore Mode events. For example I have no idea what that 6th January means. I doubt it lasted only 1 day. Also, I'm from Europe, what means here's roughly +8 hours than where the game server is. For example, an event may end on 18th at midnight, but I can still play it on the morning of 19th.
This event along with Golden Slime Casino is usually used as filler event between Prize Box promotions or larger events. First events were only during weekends and ended on Monday probably at 12 o'clock. But you can see that event in February 2018 lasted whole week. Maybe that January 2018 event lasted a week too, but I can't tell. Also, it's possible that it now ends at midnight.