If you have set at least one reminder for an event, the upcoming event icon
will appear in the notifications area of the status bar to remind you.
Slide the Notifications panel open.
If the notification shows that there are multiple reminders, tap it to see all the reminders.
You can then choose to snooze or dismiss them.
If you see a single event notification, spread your two fingers on the notification to expand it.
You can then:
If you don't want to dismiss or snooze the calendar reminders, press
from the Notifications panel to keep them pending in the notifications area of the status bar.