Current local time retrieved directly from DateTime.Now.
Current UTC time retrieved directly from DateTime.UtcNow.
Fast time source that updates current time only once per tick (15.6 milliseconds).
Fast local time source that is updated once per tick (15.6 milliseconds).
Fast UTC time source that is updated once per tick (15.6 milliseconds).
Defines source of current time.
Marks class as a time source and assigns a name to it.