Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2019 4 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/10/2019   18:26:11   (   0.01, -75.21) (  -0.08, -75.66)   51.09                80
 04/11/2019   18:10:06   (   0.01, -75.21) (   0.93, -71.12)  465.91                80
 04/13/2019   06:31:52   (  -0.01, -75.21) (   0.25, -76.39)  133.69                80
 04/14/2019   06:10:26   (  -0.01, -75.22) (  -0.76, -71.85)  383.56                80
 04/15/2019   18:32:22   (   0.00, -75.23) (  -0.42, -77.15)  218.98                80
 04/16/2019   18:16:16   (   0.00, -75.24) (   0.59, -72.61)  298.80                80
 04/18/2019   06:38:02   (  -0.00, -75.25) (   0.59, -77.88)  299.39                80
 04/19/2019   06:16:37   (  -0.01, -75.26) (  -0.42, -73.34)  218.67                80
 04/20/2019   18:38:32   (   0.01, -75.29) (  -0.76, -78.64)  382.92                80
 04/21/2019   18:22:27   (   0.01, -75.30) (   0.25, -74.11)  135.55                80
 04/23/2019   06:44:14   (  -0.02, -75.33) (   0.87, -79.38)  461.64                80
 04/24/2019   06:22:49   (  -0.02, -75.35) (  -0.14, -74.85)   57.02                80