Pebble Tides Watchface
Worldwide - tide info scraped from Easytide, the UK govt service
Update Sep2021 - UKHO have (finally) introduced a tidal data API, so we no longer need to screen-scrape. However, in their wisdom, they have removed all international predictions. Another fine example of World-beating Brexit Britain.
https://admiraltyapi.portal.azure-api.net/docs/services/uk-tidal-api
Pebble SDK 3
Python 2.7 serverside: json served to Pebble upon request.
Python pre: pip install beautifulsoup4; pip install python-dateutil