Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2021   08:07:08   (   0.15,-104.31) (  -0.72,-100.41)  444.75                80
 04/14/2021   20:29:04   (  -0.15,-104.31) (  -0.44,-105.71)  158.82                80
 04/15/2021   20:07:39   (  -0.15,-104.30) (   0.55,-101.17)  356.66                80
 04/17/2021   08:29:25   (   0.15,-104.28) (   0.65,-106.43)  245.99                80
 04/18/2021   08:13:21   (   0.15,-104.28) (  -0.40,-101.91)  271.00                80
 04/19/2021   20:35:16   (  -0.15,-104.31) (  -0.82,-107.20)  330.21                80
 04/20/2021   20:13:52   (  -0.16,-104.29) (   0.23,-102.68)  185.21                80
 04/22/2021   08:35:38   (   0.16,-104.24) (   0.97,-107.93)  420.34                80
 04/23/2021   08:19:32   (   0.16,-104.25) (  -0.02,-103.40)   96.65                80
 04/25/2021   20:20:03   (  -0.16,-104.29) (  -0.13,-104.17)   13.68                80