Answers for "real time validation in laravel 8"

laravel validation time hours minutes format

public function store(Illuminate\Http\Request $request)
{
    $this->validate($request, [
        'time_start' => 'date_format:H:i',
        'time_end' => 'date_format:H:i|after:time_start',
    ]);

    // do other stuff
}

datetime validation in laravel

return [
        'deadline' => 'date_format:Y-m-d H:i:s'
    ];