How to display calendar appointment on iPhone lock screen?

I recently switched from Windows Phone 10 to iPhone. IIm using an iPhone 5s and I really like it. But the thing I miss most from Windows Phone is calendar appointments being shown on the lock screen. Is there any way to do this on iPhones without jail-breaking?

If jail-breaking is the only way, do you recommend doing it? Do you have a video / website I could use for details?

Please be as specific as possible.

Cool