Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 2 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/24/2021   22:30:04   (   0.03,-137.20) (   0.29,-136.07)  128.82                80
 02/26/2021   10:51:51   (  -0.02,-137.20) (   0.91,-141.34)  472.21                80
 02/27/2021   10:30:26   (  -0.02,-137.19) (  -0.12,-136.81)   43.53                80
 03/01/2021   22:33:37   (   0.02,-137.17) (  -0.07,-137.58)   46.89                80
 03/02/2021   22:17:33   (   0.02,-137.16) (   0.96,-133.05)  468.33                80
 03/04/2021   10:39:20   (  -0.02,-137.14) (   0.24,-138.31)  134.24                80
 03/05/2021   10:17:56   (  -0.02,-137.12) (  -0.79,-133.79)  380.41                80
 03/06/2021   22:39:51   (   0.01,-137.09) (  -0.43,-139.08)  227.08                80
 03/07/2021   22:23:45   (   0.00,-137.07) (   0.55,-134.54)  287.37                80
 03/09/2021   10:45:33   (   0.00,-137.04) (   0.65,-139.81)  316.20                80