I hear this complaint a lot about charging times, but for 99.99% of people they are never in a single day going to drive beyond their cars range, meaning even a standard level 1 slow charger over night at home can manage their entire car usage.
It's only people doing long distance road trips that have to worry, and that's by far a minimum. Instead of boosting gas cars for that we could be looking at investing in rail so people don't have to make the longer trips in a car anyway.
All dates and times shall be stored and manipulated in Unix time. Only convert to a readable format at the top of the UI, and forget trying to parse user inputs :P that’s just impossible