Flight HA446 of Hawaiian Airlines was scheduled to take off on the night of December 31 from Auckland, New Zealand. But a ten-minute delay in departure meant the flight finally took off on 1st January 2018.
Surprisingly, when it landed in Honolulu, 8 hours later, it was still December 31 2017.
It's not so complicated and apparently very common.
The anomaly was noticed by an American journalist which, even though quite common, amazed Twitter.
That does sound like Lost. Glad I'm not on that flight.— Greg Bussmann (@GregBussmann) December 31, 2017
Gotta wonder if the crew ran 10 extra minutes of diagnostic checks to make this happen.— Matt DeCample (@DeCample) December 31, 2017
Thanks to the occurrence, the passengers would have celebrated New Year's twice.
Flight HA446 wasn't the only flight that time-travelled from 2018 to 2017. Six other flights from Taipei took off in 2018 and landed in 2017 when they arrived in North America.