Wintersday achievements
I’m doubtful there will be “log in on this day or miss the achievement” achievements, at least for each of Tixx’s stops, if he does that again. This year, they’ve really pulled back from the “Be there at XX:XX on MM/DD or miss out” events, like the destruction of the lion statue, the karka attack on Lion’s Arch, and the Ancient Karka showdown.
I wouldn’t be surprised if they has some time-limited achievement, like the one for Mad King Says or the Dragon Bash fireworks, but I wouldn’t expect several of them. Given that Christmas is usually full of travel and spending time offline for a lot of people, I’m sure it would have to be pretty flexible, if they even do one.
It’s been strongly hinted by developers that this time wintersday will be limited to LA, without visits to racial cities.
Remember, remember, 15th of November
I think Red is probably right. The last few that I can think of were the dragon bash where you had to be there to watch the fireworks. And the Sanctum event where you had to be there to watch the magic show or whatever it was.
My guess is one or no “be there at x time” achieves.