Pokemon Go Extra Elite Raid Day due to Previous Issues

Trainers, Niantic and Pokemon Go will be hosting another Elite Raid event as an apology for the previous Regidrago Elite Raid error.
The first wave of Elite Raids featuring Regidrago wasn’t successful due to an in-game error 36. Players were not able to join Elite Raids and miss out on the event window.
Now, Niantic and Pokemon Go resolved the issue, and as an apology, they will be hosting another Elite Raid day on March 12, 2023.
We have resolved an issue preventing Trainers from joining Elite Raids. By way of apology, we have added an additional day of Elite Raids on March 12 local time for Trainers in the GMT +13 timezone. Thanks for your understanding.
— Niantic Support (@NianticHelp) March 10, 2023
Regidrago is the featured Elite Raid Boss. Make sure to participate and get yourself a new Legendary Pokemon.