Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/06/2021   08:35:46   (   0.14,-104.32) (   0.97,-107.97)  416.74                80
 04/07/2021   08:19:41   (   0.14,-104.32) (  -0.07,-103.45)  100.33                80
 04/09/2021   20:20:12   (  -0.15,-104.31) (  -0.10,-104.21)   12.00                80
 04/12/2021   08:23:14   (   0.15,-104.31) (   0.27,-104.95)   71.87                80
 04/13/2021   08:07:08   (   0.15,-104.32) (  -0.72,-100.41)  445.53                80
 04/14/2021   20:29:05   (  -0.15,-104.33) (  -0.44,-105.71)  157.51                80
 04/15/2021   20:07:39   (  -0.15,-104.32) (   0.55,-101.18)  358.18                80
 04/17/2021   08:29:26   (   0.15,-104.30) (   0.60,-106.45)  244.27                80
 04/18/2021   08:13:21   (   0.15,-104.30) (  -0.39,-101.91)  272.92                80
 04/19/2021   20:35:17   (  -0.15,-104.33) (  -0.77,-107.21)  327.81                80