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,-137.18) (   0.91,-133.13)  461.98                80
 07/26/2021   10:40:05   (   0.03,-137.16) (   0.30,-138.39)  140.47                80
 07/27/2021   10:18:40   (   0.03,-137.15) (  -0.68,-133.86)  374.63                80
 07/28/2021   22:40:38   (  -0.03,-137.13) (  -0.51,-139.16)  231.70                80
 07/29/2021   22:24:34   (  -0.03,-137.12) (   0.53,-134.64)  283.29                80
 07/31/2021   10:46:22   (   0.03,-137.10) (   0.67,-139.91)  319.75                80
 08/01/2021   10:24:59   (   0.03,-137.09) (  -0.37,-135.38)  194.68                80
 08/02/2021   22:46:56   (  -0.02,-137.06) (  -0.82,-140.69)  413.16                80
 08/03/2021   22:30:52   (  -0.01,-137.04) (   0.16,-136.15)  100.69                80
 08/06/2021   10:31:18   (  -0.01,-136.98) (  -0.06,-136.91)    9.80                80