Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 10 14.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/14/2021   10:37:59   (   0.03,-137.21) (   0.32,-138.42)  138.58                80
 10/15/2021   10:21:54   (   0.03,-137.21) (  -0.69,-133.89)  377.77                80
 10/16/2021   22:41:12   (  -0.03,-137.19) (  -0.44,-139.20)  227.94                80
 10/17/2021   22:25:06   (  -0.03,-137.19) (   0.51,-134.65)  288.48                80
 10/19/2021   10:44:15   (   0.02,-137.20) (   0.65,-139.93)  311.22                80
 10/20/2021   10:28:10   (   0.03,-137.19) (  -0.36,-135.39)  204.96                80
 10/21/2021   22:47:26   (  -0.02,-137.18) (  -0.82,-140.69)  401.31                80
 10/22/2021   22:31:22   (  -0.03,-137.17) (   0.19,-136.16)  114.42                80
 10/24/2021   10:50:30   (   0.02,-137.16) (   0.97,-141.43)  486.54                80
 10/25/2021   10:34:26   (   0.02,-137.15) (  -0.05,-136.90)   28.69                80
 10/27/2021   22:34:57   (  -0.02,-137.10) (  -0.17,-137.66)   64.49                80