Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 2 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 02/11/2020   22:33:32   (  -0.04,-137.22) (  -0.12,-137.52)   34.68                80
 02/12/2020   22:17:28   (  -0.04,-137.22) (   0.88,-132.99)  481.37                80
 02/14/2020   10:39:17   (   0.04,-137.21) (   0.25,-138.28)  120.35                80
 02/15/2020   10:17:52   (   0.04,-137.21) (  -0.75,-133.74)  395.28                80
 02/16/2020   22:39:49   (  -0.05,-137.20) (  -0.46,-139.04)  210.37                80
 02/17/2020   22:23:44   (  -0.05,-137.19) (   0.54,-134.51)  304.95                80
 02/19/2020   10:45:32   (   0.06,-137.17) (   0.64,-139.78)  297.63                80
 02/20/2020   10:24:08   (   0.06,-137.16) (  -0.36,-135.25)  217.30                80
 02/21/2020   22:46:04   (  -0.06,-137.14) (  -0.85,-140.55)  389.42                80
 02/22/2020   22:30:00   (  -0.07,-137.13) (   0.16,-136.02)  125.45                80
 02/24/2020   10:51:48   (   0.07,-137.11) (   1.03,-141.29)  477.63                80
 02/25/2020   10:30:24   (   0.07,-137.09) (   0.02,-136.76)   37.00                80