Plug in the TLE data, select your town or enter your coordinates, and generate a 24 hour projection! Find a time where the elevation is higher than 10 or 20 degrees so that you can actually see it.
If it helps, I automated those steps into a simple tracker form: http://me.cmdr2.org/starlink/ will let you find when Starlink will pass over your selected city.
This is using the exact same approach that many redditors said worked for them, but does the data-crunching for you. It's a modified version of the tool you linked to (Jen Satre's excellent satellite calculator), and hardcodes the Starlink data.
Find out when the satellites pass over you!
Here's the TLE data that someone estimated: http://www.satobs.org/seesat/May-2019/0207.html
Here's an online calculator: https://www.satellite-calculations.com/TLETracker/SatTracker...
Plug in the TLE data, select your town or enter your coordinates, and generate a 24 hour projection! Find a time where the elevation is higher than 10 or 20 degrees so that you can actually see it.