Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 12 31.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/31/2019   22:21:11   (  -0.02,-137.21) (   0.56,-134.52)  306.86                80
 01/02/2020   10:45:39   (   0.03,-137.22) (   0.57,-139.79)  292.26                80
 01/03/2020   10:24:13   (   0.02,-137.22) (  -0.44,-135.26)  224.57                80
 01/04/2020   22:48:48   (  -0.03,-137.22) (  -0.75,-140.56)  379.77                80
 01/05/2020   22:27:23   (  -0.03,-137.22) (   0.26,-136.02)  136.69                80
 01/07/2020   10:51:49   (   0.04,-137.21) (   0.93,-141.28)  463.64                80
 01/08/2020   10:30:24   (   0.03,-137.21) (  -0.08,-136.75)   52.18                80
 01/10/2020   22:36:14   (  -0.04,-137.17) (  -0.09,-137.52)   38.65                80
 01/11/2020   22:14:48   (  -0.04,-137.16) (   0.92,-132.98)  476.56                80
 01/13/2020   10:39:14   (   0.04,-137.14) (   0.27,-138.25)  125.62                80
 01/14/2020   10:17:49   (   0.04,-137.12) (  -0.74,-133.71)  389.10                80