How to tackle "This connection is untrusted" issues on your pc browser

Good day dear readers, i will be talking about a very important problem that took me up to 6months to find solution to. The solution to this problem is simple though but without information, nothing is simple. Have you come across this error message "This connection is untrusted" when browsing some websites like facebook and google on mozilla firefox browser? Check the image below to see what am talking about

Yes that's it. If you have then i have a simple solution for you. simply set your pc date. Yes!!! that's just it.