Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/28/2021   22:35:36   (   0.00,-137.20) (  -0.15,-137.78)   66.61                80
 11/29/2021   22:19:30   (  -0.00,-137.19) (   0.87,-133.24)  449.78                80
 12/01/2021   10:38:36   (  -0.00,-137.18) (   0.30,-138.51)  151.59                80
 12/02/2021   10:22:31   (   0.00,-137.17) (  -0.73,-133.98)  364.17                80
 12/03/2021   22:41:45   (  -0.00,-137.15) (  -0.48,-139.28)  242.06                80
 12/04/2021   22:25:40   (  -0.01,-137.14) (   0.55,-134.74)  273.13                80
 12/06/2021   10:44:45   (   0.01,-137.11) (   0.68,-140.00)  329.85                80
 12/07/2021   10:26:00   (   0.01,-137.09) (  -0.35,-135.47)  184.83                80
 12/08/2021   22:47:54   (  -0.01,-137.06) (  -0.85,-140.76)  422.73                80
 12/09/2021   22:31:48   (  -0.01,-137.04) (   0.18,-136.23)   91.91                80