Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 19.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/20/2021   10:45:02   (   0.01,-137.22) (   0.65,-140.05)  322.63                80
 11/21/2021   10:28:57   (   0.01,-137.21) (  -0.37,-135.52)  193.44                80
 11/22/2021   22:48:11   (  -0.01,-137.19) (  -0.84,-140.81)  412.54                80
 11/23/2021   22:32:06   (  -0.01,-137.19) (   0.18,-136.28)  103.13                80
 11/25/2021   10:51:12   (   0.01,-137.17) (   1.00,-141.54)  498.63                80
 11/26/2021   10:35:07   (   0.01,-137.16) (  -0.02,-137.01)   16.60                80
 11/28/2021   22:35:36   (  -0.00,-137.12) (  -0.16,-137.78)   75.47                80
 11/29/2021   22:19:30   (  -0.01,-137.10) (   0.86,-133.25)  439.43                80
 12/01/2021   10:41:16   (   0.00,-137.08) (   0.31,-138.51)  163.46                80
 12/02/2021   10:19:51   (   0.00,-137.05) (  -0.71,-133.98)  350.86                80