Aunt Arctic is going to be visiting for the 4th Anniversary Party on Club Penguin Rewritten! The team have revealed four scheduled visits where she’ll definitely be appearing, although it’ll likely be very full, so you might wish to log on much earlier than when the visit is due to take place.
I’ve listed all of the meet-ups are on the Aunt Arctic tracker, so you can click the link above to view them instead! That page also contains countdowns until the event, so you shouldn’t need to worry much about time-zones.
Good luck meeting Aunt Arctic when she visits – the tracker should hopefully help you in doing so!