Backdated photo

Today just happened to take out my camera to take pictures of the things I've bought at the PC Show.
And I saw that inside my memory card, there is an image of an evening sky taken from my balcony window.

The editing part is a bit poor.
I am still unable to get the colors of the clouds out.
Perhaps the camera setting was incorrect and hence, I was unable to get the desired outcome that I wanted.
The sky looked pretty nice from my eyes, but after taking a look at the image on my mac, it did not turn out correctly.
Anyway... here's the image.


The exif shows that the image was taken on 19 April.
Wow... that's like 1.5 months ago.

Backed,
Peiyan