I'm not a fan of the name (or the entire syntax really, but the non-descriptive name is the worst bit). python is generally pretty self-documenting, but calling 'Delorean' to convert times is totally obscure. using datetime and pytz.timezone is a few too many steps at times, but at least it is readable. This is just magic.
`return utc.localize(datetime.utcnow()).astimezone(est)` is maybe a little annoying to type out, but it's obvious what it does. `return Delorean(est)` doesn't make any sense at all.