Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/30/2021   10:38:23   (   0.02,-137.22) (   0.32,-138.49)  144.88                80
 10/31/2021   10:22:20   (   0.02,-137.22) (  -0.68,-133.96)  370.74                80
 11/01/2021   22:41:38   (  -0.02,-137.21) (  -0.51,-139.27)  235.05                80
 11/02/2021   22:25:36   (  -0.02,-137.21) (   0.55,-134.75)  280.35                80
 11/04/2021   10:44:45   (   0.02,-137.19) (   0.67,-140.02)  322.40                80
 11/05/2021   10:28:42   (   0.02,-137.18) (  -0.33,-135.49)  192.37                80
 11/06/2021   22:48:00   (  -0.01,-137.16) (  -0.85,-140.80)  415.15                80
 11/07/2021   22:31:56   (  -0.02,-137.14) (   0.16,-136.27)   99.04                80
 11/10/2021   10:32:23   (   0.01,-137.09) (  -0.00,-137.02)    8.37                80