Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/17/2021   08:29:25   (   0.15,-104.28) (   0.66,-106.43)  245.94                80
 04/18/2021   08:13:21   (   0.15,-104.28) (  -0.40,-101.91)  271.09                80
 04/19/2021   20:35:16   (  -0.15,-104.31) (  -0.82,-107.20)  330.19                80
 04/20/2021   20:13:52   (  -0.16,-104.30) (   0.23,-102.68)  185.27                80
 04/22/2021   08:35:38   (   0.15,-104.25) (   0.98,-107.93)  420.15                80
 04/23/2021   08:19:32   (   0.16,-104.25) (  -0.02,-103.40)   96.89                80
 04/25/2021   20:20:03   (  -0.16,-104.29) (  -0.14,-104.17)   13.92                80
 04/28/2021   08:23:05   (   0.15,-104.22) (   0.29,-104.90)   77.42                80
 04/29/2021   08:07:00   (   0.16,-104.22) (  -0.70,-100.36)  439.37                80
 04/30/2021   20:28:56   (  -0.15,-104.27) (  -0.44,-105.67)  158.59                80