Press N to create an alarm. Remember to add AM or PM! Press D to delete an alarm. Remember to add AM or PM! Press SPACE to shut off an alarm. It will only work if the time is no the same as the alarm's time. It shows all your alarms on the screen.
Thanks to @relrel for the st to cloud and cloud to list scripts. Everything else by me. This uses a combination of my scripts and relrel's scripts. Find this combination at https://scratch.mit.edu/projects/228284695/