Here's how you can customize the Today View in the iOS 7 Notification Center.
1. Go to Settings.
2. Go to Notification Center.
3. Scroll down to the Today View section.
4. Toggle the following settings to green or red (depending on what you want to appear):
Calendar Day View
The Today View is quite useful, but sometimes less is definitely more. So be sure to adjust your settings so that it only shows you want you really want to see.
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