how its looks for u now?Seems Calendar systems have some bug here
I'm guessing that memb set right "18GMT" but the system read this as "18 spain local time"
so in this post it shows "1 local time" for me (spain GMT+1 and I'm GMT+8)
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Another problem is in the up right corner "Upcoming events" it turns to show "1GMT"
screen shot below
Edit: i found there is some discussion Here