what is Clock.SystemTime?
Is it an hour? Is it a minute? Is it something else?
you can find it out after using Do it...
use Do it to debug your blocks, see also tip 4 here App Inventor: How to Learn | Pura Vida Apps
see also Live Development, Testing, and Debugging Tools
to send a notification at a specific time you can use the alarmmanager extension
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
Hi there @Tanner_Slusher.
Can you please help me? What should I do for the initialize variables blocks?
Please elaborate
Taifun
Sorry, I meant he had mentioned the variable Global Hour. To create a variable, it must be initialized right? My question was what should I say for the initialize part?
Again, apologies for the misunderstanding 
You can initialize it to anything you like, for example 0.
Taifun
Oh! That's great! This will be very helpful.
Many Thanks!