Also check https://geolocation.ws/

It allows you to upload geotagged photos & GPX tracks. Also shows geotagged photos from multiple sources

http://i.imgur.com/eX3Y8ob.png

For Linux users there is gpscorrelate and gpscorrelate-gui utility to add geotag to photos using GPX track

http://manpages.ubuntu.com/manpages/hardy/man1/gpscorrelate.1.html https://apps.ubuntu.com/cat/applications/precise/gpscorrelate-gui/

In case your camera clock is not in sync with exact time you can also change EXIF date using exiftool

add 6 seconds to EXIF datetime

exiftool “-AllDates+=0:00:00 00:00:06” -overwrite_original_in_place -verbose G0015395.JPG