I figured this out once before but can't remember how I did it. I was outside in the sunlight and when I tried to open notifications, I accidentally dragged my clock/weather widget into the trash because I couldn't see the screen very well (another problem). How do I get it back? I tried putting the clock widget there, but it's not the clock/weather combo that was on my home screen. I will write this step down once someone comes to my rescue! Sorry for being so dense about this!

Edit: I still need the answer to this for "next time" but I had to power off my phone because my wallpaper changed on its own and I couldn't get it back. When I powered it back on, voila, my clock is back. Have no idea why, but I'm glad it's back.

 

sure enough. it's baaaaccckkk! Thanks.