Show HN: Timezone Converter in Map Form

I often need to convert times between time zones, so I built this tool to convert between them quickly and efficiently.

1. Add the cities you want to convert between (this is saved in the browser).

2. Drag on the map until the time on the source city is the time you want.

3. Look at the time at the other city.

It's even more helpful to use on a phone since it doesn't require typing to convert between time zones or look up the time in another city (assuming you already added the cities you care about).

If you need to convert a time far in the future, you can input the date and time in the picker next to the city, and it will handle any DST shifts as well.