Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2021   22:42:00   (  -0.01,-137.22) (  -0.45,-139.33)  239.83                80
 11/18/2021   22:25:57   (  -0.01,-137.22) (   0.56,-134.80)  276.31                80
 11/20/2021   10:45:06   (   0.01,-137.22) (   0.65,-140.07)  324.72                80
 11/21/2021   10:29:03   (   0.01,-137.21) (  -0.36,-135.54)  190.81                80
 11/22/2021   22:48:21   (  -0.01,-137.20) (  -0.82,-140.85)  415.98                80
 11/23/2021   22:32:18   (  -0.01,-137.19) (   0.19,-136.32)   99.13                80
 11/26/2021   10:32:43   (   0.01,-137.16) (  -0.00,-137.06)   11.73                80
 11/28/2021   22:35:58   (  -0.00,-137.12) (  -0.16,-137.84)   81.80                80
 11/29/2021   22:19:55   (  -0.01,-137.10) (   0.85,-133.31)  432.54                80