Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 12 26.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/27/2021   10:50:36   (  -0.03,-137.21) (   0.94,-141.45)  483.77                80
 12/28/2021   10:34:30   (  -0.02,-137.21) (  -0.10,-136.92)   32.81                80
 12/30/2021   22:34:58   (   0.01,-137.18) (  -0.11,-137.68)   56.37                80
 12/31/2021   22:18:53   (   0.00,-137.17) (   0.93,-133.15)  459.51                80
 01/02/2022   10:37:58   (   0.00,-137.15) (   0.26,-138.41)  142.18                80
 01/03/2022   10:19:12   (   0.01,-137.14) (  -0.72,-133.86)  373.12                80
 01/04/2022   22:41:06   (  -0.01,-137.11) (  -0.47,-139.16)  233.84                80
 01/05/2022   22:24:59   (  -0.01,-137.09) (   0.52,-134.62)  281.34                80
 01/07/2022   10:46:45   (   0.01,-137.07) (   0.67,-139.88)  320.80                80
 01/08/2022   10:25:19   (   0.01,-137.05) (  -0.38,-135.35)  194.22                80