Here we are NE England and Saturday 24th September was clearly a chemtrail day. NASA Worldview was useless for this , rendered nothing to see, yet in the sky above huge long tracks in the sky that are undoubtedly surely not condensation trail. As with recent mornings, chemtrails started early, try 0630 local.
For Saturday and my hazy memory I apply my own-devised DQA Reporting System (duration, quantity, affect) for the day as DQA 8,2,1. This means during all of the day chemtrail could be seen in the sky above (8 out of 10) with quantity only a few ie one, two or say three in the sky at any given time and little real overall effect ie not the dreaded ‘grey reaction clouds’ as on an April morning abt four years back.

Lets go look at flightradar24, its free and v interesting, a small subscription adds extra info. We click replay to see if anything is recorded as flying overhead at that time, be warned, some aircraft overhead never make it to the fr24 screen. Yes, we have three planes around that time leading up to specifically 11:10 UTC (GMT) it is the third of the three flights to the USA I see directly overhead ie the newer thinner chemtrail to our left in the pic above; all from Vienna, first of the three is to Chicago, the second to Washington and if fr24 is accurate the newer second chemtrail is from the last of the three aircraft ie Vienna to New York, callsigns AUA65, AUA93, AUA89 respectively. Therefore two out of the three aircraft provided us with chemtrail free of charge yet one of the three left no chemtrail at all.
