Can’t connect to D365 if system clock is wrong

Probably title of this post summaries it well, but there is some detail worth explanation. I was developing an Azure Function app which was basically integrating data between D365 CE and another system. The major functionality of this application was complete and tested. Two weeks back when I came back from leave I found application (which I was developing), can’t connect to CE now. I was using Microsoft.Xrm.Tooling assembly with the following code.....