Over the Bubble (@OverTheBubble) is a Twitter bot I run based on Matthew Somerville's Above Brum project. Matthew's bot sends a message approx 30 minutes before an Iridium flare or an ISS flyby over Birmingham, mine does exactly the same but for Whitstable (aka the Bubble) instead of Brum.

My bot is based on Matthew's code (with different lat/long), and both bots scrape their data from Heavens Above. Other Earth-visible satellites could easily be added to the bot's reporting, if required please ask!