The day Thur United Kingites of Thur Krown or the UKK invade Papua New Guinea. This is the date it will happen or it may be on the leader's birthday, it depends if they get lazy.
Random: "What's happening on July 8th 2050?"
Kingite of Thur Krown: "We're invading Papua New Guinea"
Random: "Why?"
Kingite of Thur Krown: "Because Thur Krowned Head, Yurius Guderian, said so 2 years ago"