The most likely cause of this issue is not setting your Events Calendar timezone.
To change your Event Calendar's timezone:
- Head to your dashboard and choose the Events Calendar that has the wrong events time. This will then take you into the editor page.
- Choose the layout tab near the top right.
3) Underneath the layout tab (you may need to scroll down slightly), you will see a setting called Calendar Timezone.
Be sure to set this to your most appropriate timezone. This should solve your problem.