laravel migration why is datetime in name code example

Example 1: datetime-local laravel migration data type

public function getDateStartAttribute($value)
{
    return Carbon::parse($value)->format('Y-m-d\TH:i');
}

public function getDateEndAttribute($value)
{
    return Carbon::parse($value)->format('Y-m-d\TH:i');
}

Example 2: how to use datetime.now in migration laravel

Laravel Migration Datetime Now