Awesome

Timezoner

A tiny service for detecting timezones by coordinates so you don't need to be dependent on online ones.

Clone the repository and run the bootstrap script:

bin/bootstrap

rails s

and just pass latitude and longitude:

curl "http://localhost:3000/timezone?lat=53&lng=27"
{"timezone":"Europe/Minsk"}%

PostGIS version >= 1.5 is required.

On Ubuntu simply install required packages with apt-get:

apt-get install postgresql-9.1-postgis

On Mac you can use Postgres.app or install PostGIS using brew.

Don't forget to look through database.yml and pick right settings depending on PostgreSQL and PostGIS versions.

Ubuntu:

apt-get install libgeos-dev

Homebrew:

brew install geos

You might need to reinstall rgeo gem to make it support geos. It's possible to uninstall and install it:

bundle exec gem uninstall rgeo
bundle install