Default values in page creation dialog

Right, that won’t work.

Another option: Overwrite the date field with your own, changing the default property to support query strings. Basically like here with the number field: Dynamic default number field - #2 by texnixe

'props' => [
	'default' => function ($default = null): string {
		return $this->toDatetime($this->model->toString($default)) ?? '';
	},
]