How to make sure scheduled notification works with respect to timezone and daylight savings

Question

As far as I understand , when we pass date time components as a trigger for notification. It automatically handles

• Change in timezone
• Change in daylight savings
• Leap year things

But I know in older UILocalnotification we've to do the below to get this above result.

notification.timeZone = NSTimeZone.systemTimeZone() 

Can we completely trust UNUserNotification with Datetimecomponents ?

Someone please clarify