The SOPP package could check first for a provided TLE file. If it doesn't find it, it can look for a previously automatically downloaded file. In the second case, if it finds that file is older than some amount of time (1 day?), it can attempt to download the newest data.
The SOPP package could check first for a provided TLE file. If it doesn't find it, it can look for a previously automatically downloaded file. In the second case, if it finds that file is older than some amount of time (1 day?), it can attempt to download the newest data.