Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/08/2021   20:20:23   (  -0.06,-104.26) (  -0.05,-104.27)    1.86                80
 03/11/2021   08:23:26   (   0.07,-104.41) (   0.20,-105.01)   68.28                80
 03/12/2021   08:07:22   (   0.07,-104.42) (  -0.83,-100.49)  449.32                80
 03/13/2021   20:29:17   (  -0.08,-104.30) (  -0.39,-105.78)  167.82                80
 03/14/2021   20:07:51   (  -0.07,-104.30) (   0.59,-101.24)  348.52                80
 03/16/2021   08:29:40   (   0.08,-104.44) (   0.53,-106.52)  237.09                80
 03/17/2021   08:13:35   (   0.07,-104.45) (  -0.51,-101.99)  280.77                80
 03/18/2021   20:35:31   (  -0.08,-104.35) (  -0.71,-107.29)  333.92                80
 03/19/2021   20:14:05   (  -0.08,-104.35) (   0.27,-102.75)  182.28                80
 03/21/2021   08:35:52   (   0.09,-104.46) (   0.91,-108.01)  406.11                80