If you have set at least one reminder for an event, the upcoming event icon
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will appear in the notifications area of the status bar to remind you.
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Slide the Notifications panel open.
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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.
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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
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from the Notifications panel to keep them pending in the notifications area of the status bar.