Event details
Times use your browser timezone.
Your calendar link
Create an Add to Google Calendar link with title, dates, description and location. One click adds the event to anyone's calendar.
Times use your browser timezone.
Google's calendar/render?action=TEMPLATE endpoint prefills the event composer from URL parameters: text for the title, dates as start/end in YYYYMMDDTHHMMSS format, plus details and location. The visitor reviews and saves with one click.
The datetime format used here carries no timezone offset, so Google interprets it in the viewer's own timezone. For global events, state the timezone explicitly in the description, like 3 PM WIB, to avoid confusion.