Yes, spell casting may be done during the day. Of course there is the issue of waxing, full or waning moon phase depending on your spell, doesn't matter if it's daylight out. The planetary hour (time of day), and day of week matters.
Check out this site on natural magick and ritual correspondences;
Here is another site on correspondences to study. This one, is kind of intense. Just visit the site and you'll see;
However, there are many websites on daytime correspondence information.
You might try googling planetary hour correspondences, and see what you get.
Hope this helps. Blessed Be.