Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 7 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/24/2021   22:18:16   (  -0.03,-137.17) (   0.88,-133.12)  461.89                80
 07/26/2021   10:40:04   (   0.03,-137.16) (   0.33,-138.39)  140.38                80
 07/27/2021   10:18:41   (   0.03,-137.15) (  -0.71,-133.86)  374.77                80
 07/28/2021   22:40:38   (  -0.04,-137.14) (  -0.48,-139.17)  231.63                80
 07/29/2021   22:24:34   (  -0.03,-137.12) (   0.50,-134.63)  283.40                80
 07/31/2021   10:46:23   (   0.03,-137.11) (   0.64,-139.91)  319.46                80
 08/01/2021   10:24:59   (   0.03,-137.09) (  -0.34,-135.38)  195.02                80
 08/02/2021   22:46:56   (  -0.02,-137.06) (  -0.85,-140.68)  412.89                80
 08/03/2021   22:30:52   (  -0.01,-137.04) (   0.19,-136.16)  100.98                80
 08/06/2021   10:31:17   (  -0.01,-136.99) (  -0.03,-136.90)    9.86                80