Earlier today, I had three satellites with SNR in the Green range, The rest red.
Now when I check I see about 12 with Red SNR, I suppose from the Almanac.
After 30 seconds or so this drops to 6 with red SNR, I suppose from Ephemeris.
I suppose that someone is up to something.
PS Just now they have all vanished, no Galileo to be seen at all.