All lessons on Convrld are listed in the timezone you set in the first time you logged in on Convrld:

You can check your time from getting into your dashboard at the end of the page under your profile photo you will see your timezone 

So, if you see a lesson scheduled for 3 o'clock, that means 3 o'clock in whatever timezone you set. If you go travel, you have to change your timezone manually.

If your timezone at Convrld (the one you set up in settings) doesn't match the clock on your computer, please go to your setting and change your timezone