Send google calendar invites

Hi Jeff.

I’ve had a good look at Agical.io and have managed to create a string to send to it based upon some fields in a simple app however the time it adds within the ical event is 1hr out. I’m assuming this is a timezone issue and british summer time thing?
Here’s how my string looks at the moment.
http://ics.agical.io/?subject=12%20Main%20Street&organizer=My%20Jobs&reminder=15&location=12%20Main%20Street&dtstart=2020-06-25T14:00:00+00:00&duration=2H

Their website does have an example string which I did try and it worked so I based my string from this example:
http://ics.agical.io/?subject=Meet%20{{company.Account Owner First Name}}&organizer=Sandy&reminder=45&location=Sandy%27s%20Desk&dtstart=2016-10-26T15:00:00-04:00&dtend=2016-10-26T16:00:00-04:00&attach=http://www.example.com/

I know there’s many ways to achieve syncing but this option seems simple if I can get it to work!
Thanks