Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/03/2021   10:44:12   (   0.03,-137.24) (   0.66,-139.94)  308.71                80
 10/04/2021   10:28:08   (   0.03,-137.25) (  -0.40,-135.42)  209.05                80
 10/05/2021   22:47:24   (  -0.03,-137.26) (  -0.80,-140.72)  393.76                80
 10/06/2021   22:31:20   (  -0.03,-137.27) (   0.21,-136.19)  123.69                80
 10/08/2021   10:50:28   (   0.03,-137.28) (   0.96,-141.46)  475.62                80
 10/09/2021   10:34:24   (   0.03,-137.29) (  -0.05,-136.92)   41.23                80
 10/11/2021   22:34:56   (  -0.03,-137.28) (  -0.14,-137.69)   47.03                80
 10/12/2021   22:18:51   (  -0.03,-137.28) (   0.88,-133.16)  469.04                80
 10/14/2021   10:37:59   (   0.02,-137.27) (   0.29,-138.43)  132.24                80
 10/15/2021   10:21:55   (   0.02,-137.27) (  -0.72,-133.90)  383.64                80