Today I found something strange in your website jwt.io. I was checking if the jwt token I have, has a valid expiration time. I pasted the token and it showed me an expiration date of 11 march and initialization date of march 1. Since I generated that token today I thought may be I did something wrong in my code. Then I copied the date shown at jwt.io and pasted it in browser console, It returned me the right value of Feb 22.
So either the tooltip is showing the wrong value or I am doing something wrong. Please clearify this.