Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 3.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/03/2021   20:35:24   (  -0.13,-104.32) (  -0.80,-107.24)  333.26                80
 04/04/2021   20:13:59   (  -0.13,-104.31) (   0.25,-102.72)  182.12                80
 04/06/2021   08:35:46   (   0.14,-104.32) (   0.97,-107.97)  416.33                80
 04/07/2021   08:19:41   (   0.14,-104.33) (  -0.07,-103.45)  100.87                80
 04/09/2021   20:20:12   (  -0.15,-104.32) (  -0.09,-104.22)   12.73                80
 04/12/2021   08:23:14   (   0.15,-104.32) (   0.26,-104.95)   70.52                80
 04/13/2021   08:07:08   (   0.15,-104.33) (  -0.73,-100.41)  447.06                80
 04/14/2021   20:29:04   (  -0.15,-104.34) (  -0.48,-105.70)  156.02                80
 04/15/2021   20:07:39   (  -0.15,-104.33) (   0.57,-101.18)  359.86                80