configuration parameter "events" does not select (differentiate) a date

[Lionberg]

According the description of the Configuration parameters:
events array of dates that you would like to differentiate from regular days (e.g. ['Sat Jun 28 2017', 'Sun Jun 29 2017', 'Tue Jul 01 2017',])

I can configure such a date;

But it does not work even if I provide exact the same string from the description:

$('.datepicker').pikaday({ ... events: ['Sat Jun 28 2017', 'Sun Jun 29 2017', 'Tue Jul 01 2017',], ... });

[Eric Paulson]

Same issue. This doesn't seem to work at all.

[Risto Niinemets]

This seems to work:

events: [ new Date('2021-11-03').toDateString(), new Date('2021-11-04').toDateString(), ]

[fransiskusferdian94]

This seems to work:

events: [ new Date('2021-11-03').toDateString(), new Date('2021-11-04').toDateString(), ]

It's work , but how can I dynamically do this from PHP backend? I'm using laravel livewire