Error with Token Expiry Time

So I just authenticated and then tried again and was receiving a 401 from my server so I decided to see what was going on. What I found was that the expiry time saved after I authenticated was different to the time on the token. The expiry time saved was:

Date in your timezone*: 3/16/2018, 11:34:14 AM Standard Time)

And The expiry time on the token:
Date in your timezone*: 3/16/2018, 10:27:38 AM Standard Time)

This is really frustrating.

First time this has happend

This is almost certainly a clock synchronisation issue. Could you please make sure your clock is properly configured and ideally synchronised with an NTP service?