Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 8 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2021   10:52:41   (   0.04,-137.19) (   0.98,-141.43)  482.75                80
 08/06/2021   10:31:16   (   0.03,-137.18) (  -0.01,-136.89)   32.40                80
 08/08/2021   22:34:30   (  -0.03,-137.16) (  -0.14,-137.68)   58.68                80
 08/09/2021   22:18:26   (  -0.03,-137.15) (   0.85,-133.14)  456.09                80
 08/11/2021   10:37:34   (   0.03,-137.12) (   0.34,-138.41)  147.91                80
 08/12/2021   10:21:31   (   0.03,-137.10) (  -0.71,-133.89)  366.58                80
 08/13/2021   22:40:48   (  -0.02,-137.08) (  -0.48,-139.19)  240.58                80
 08/14/2021   22:24:43   (  -0.02,-137.06) (   0.51,-134.66)  273.43                80
 08/16/2021   10:43:52   (   0.02,-137.02) (   0.68,-139.93)  331.95                80
 08/17/2021   10:27:48   (   0.01,-136.99) (  -0.36,-135.40)  181.10                80
 08/18/2021   22:47:05   (   0.01,-136.95) (  -0.82,-140.71)  428.22                80