I'm the developer of the site. Just a quick note, on iPad/iPhone and Android you have the option to customize the list of time zones shown; and we'll add more t

I'm the developer of the site. Just a quick note, on iPad/iPhone and Android you have the option to customize the list of time zones shown; and we'll add more time zones in the future (and probably some sort of city search and custom labels). There will also be some sort of calendar to select a date in the future, so you can link to specific date with the correct timezone offsets for that date set (because those change with DST).