I recently discovered that the transit times of Orbitron and Look4Sat are inconsistent, which has resulted in me being unable to receive ISS signals.
The download of the Celestrak ephemeris was partially successful and partially unsuccessful.
When you check the Orbitron program folder, you'll find that the TLE files have dates from the 2000s.
I found on the Celestrak website that the domain name had been changed from .com to .org.
Decided to uninstall and reinstall Orbitron on D drive instead, as installing it on C drive might be restricted by system permissions.
Create a new star calendar group. When editing the group, copy and save the following URL, then update it to complete the process.
http://celestrak.org/NORAD/elements/gp.php?GROUP=active&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=amateur&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=analyst&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=argos&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=beidou&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=cubesat&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=dmc&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=education&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=engineering&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=eutelsat&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=fengyun-1c-debris&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=galileo&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=geo&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=geodetic&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=globalstar&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=glo-ops&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=gnss&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=goes&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=gorizont&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=gps-ops&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=intelsat&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=iridium&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=iridium-NEXT&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=last-30-days&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=military&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=molniya&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=musson&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=nnss&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=noaa&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=oneweb&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=orbcomm&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=other&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=other-comm&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=planet&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=radar&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=raduga&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=resource&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=sarsat&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=satnogs&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=sbas&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=science&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=ses&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=spire&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=starlink&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=stations&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=swarm&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=tdrss&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=visual&FORMAT = tle
http://celestrak.org/NORAD/elements/gp.php?GROUP=weather&FORMAT = TLE
http://celestrak.org/NORAD/elements/gp.php?GROUP=x-comm&FORMAT = TLE
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