Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/23/2021   22:46:09   (   0.04,-137.20) (  -0.69,-140.61)  387.89                80
 02/24/2021   22:30:03   (   0.03,-137.20) (   0.28,-136.07)  128.15                80
 02/26/2021   10:51:51   (  -0.02,-137.19) (   0.93,-141.34)  472.59                80
 02/27/2021   10:30:26   (  -0.02,-137.19) (  -0.10,-136.81)   42.98                80
 03/01/2021   22:33:37   (   0.02,-137.15) (  -0.09,-137.57)   48.35                80
 03/02/2021   22:17:33   (   0.02,-137.14) (   0.94,-133.05)  466.72                80
 03/04/2021   10:39:20   (  -0.02,-137.12) (   0.26,-138.31)  135.59                80
 03/05/2021   10:17:55   (  -0.02,-137.11) (  -0.77,-133.78)  378.92                80
 03/06/2021   22:39:51   (   0.01,-137.07) (  -0.45,-139.08)  229.30                80
 03/07/2021   22:23:46   (   0.01,-137.05) (   0.59,-134.55)  284.97                80