WEBSITE - Update World Party pages to indicate all times are April 28 UTC

The World Party landing page and blog post list the event times as:

• 1-2pm UTC / 6-7am PDT
• 9-10pm UTC / 3-4pm PDT
• 5-6am UTC / 10-11pm PDT

This is confusing for attendees because it suggests that the third timeslot is the following day, i.e. April 29 5am UTC.

We need to update the assets to list the event times explicitly as April 28 UTC to avoid confusion:

• April 28 5:00am UTC
• April 28 1:00pm UTC
• April 28 9:00pm UTC