Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/23/2021   22:32:06   (  -0.01,-137.21) (   0.19,-136.28)  105.73                80
 11/25/2021   10:51:12   (   0.01,-137.21) (   0.99,-141.55)  494.55                80
 11/26/2021   10:35:07   (   0.01,-137.21) (  -0.04,-137.01)   21.82                80
 11/28/2021   22:35:36   (  -0.00,-137.19) (  -0.15,-137.78)   67.26                80
 11/29/2021   22:19:30   (  -0.01,-137.18) (   0.87,-133.25)  448.81                80
 12/01/2021   10:38:36   (   0.00,-137.17) (   0.30,-138.51)  152.56                80
 12/02/2021   10:22:31   (   0.01,-137.16) (  -0.73,-133.98)  362.90                80
 12/03/2021   22:41:45   (  -0.01,-137.13) (  -0.48,-139.28)  244.11                80
 12/04/2021   22:25:40   (  -0.01,-137.12) (   0.55,-134.75)  270.78                80
 12/06/2021   10:47:25   (   0.00,-137.09) (   0.68,-140.00)  332.26                80