https://worldview.earthdata.nasa.go...9219824,-4.439793610478603,59.945740947969824 A nice bunch of transatlantic contrails. But one stands out, the zigzag one. Sept 18,2017. I suspect it was changing from one north atlantic track to another. You get turns like this: That matches the top part, but the actual plane seems to make two turns like that. How do you figure out the Terra time?