Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 11 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/04/2021   10:44:46   (   0.02,-137.20) (   0.63,-140.02)  320.85                80
 11/05/2021   10:28:42   (   0.02,-137.19) (  -0.37,-135.49)  194.21                80
 11/06/2021   22:48:01   (  -0.02,-137.18) (  -0.81,-140.80)  412.94                80
 11/07/2021   22:31:57   (  -0.02,-137.16) (   0.19,-136.27)  101.51                80
 11/10/2021   10:32:23   (   0.02,-137.12) (   0.02,-137.01)   12.03                80
 11/12/2021   22:35:38   (  -0.01,-137.07) (  -0.19,-137.79)   82.61                80
 11/13/2021   22:19:34   (  -0.01,-137.05) (   0.82,-133.26)  431.45                80
 11/15/2021   10:38:45   (   0.01,-137.02) (   0.33,-138.54)  172.76                80
 11/16/2021   10:22:41   (   0.01,-137.00) (  -0.68,-134.01)  341.08                80