[FRONTEND] Convert all dates to UTC

[bcho892]

Is your feature request related to a problem? Please describe.

Right now there is quite a bit of jank on the frontend because of all the custom date handling.~~ moment.js may help clean some of this up. ~~

We need to clean up the mess we have with all the dates, and assert that UTC must be used for all date related data.

BEFORE MERGING

• [ ] Storybooks created where possible
• [ ] Tested with nock if data fetching
• [ ] Tests written for critical interactions
• [ ] PR Reviewed (For non-trivial changes)
• [ ] Changes tested after rebasing on master or merging in master (hint: git fetch origin master:master, then git rebase master or git merge master)
• [ ] All required PR checks passing