Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/12/2021   08:23:14   (   0.15,-104.30) (   0.27,-104.94)   72.50                80
 04/13/2021   08:07:08   (   0.15,-104.31) (  -0.72,-100.41)  444.72                80
 04/14/2021   20:29:05   (  -0.15,-104.32) (  -0.44,-105.71)  158.78                80
 04/15/2021   20:07:39   (  -0.15,-104.30) (   0.55,-101.17)  356.71                80
 04/17/2021   08:29:25   (   0.15,-104.28) (   0.66,-106.43)  245.99                80
 04/18/2021   08:13:21   (   0.15,-104.28) (  -0.39,-101.91)  271.00                80
 04/19/2021   20:35:16   (  -0.15,-104.31) (  -0.83,-107.20)  330.16                80
 04/20/2021   20:13:52   (  -0.16,-104.30) (   0.22,-102.68)  185.25                80
 04/22/2021   08:35:38   (   0.16,-104.25) (   0.99,-107.93)  420.34                80
 04/23/2021   08:19:33   (   0.16,-104.25) (  -0.00,-103.39)   96.67                80
 04/25/2021   20:20:03   (  -0.16,-104.29) (  -0.16,-104.16)   13.98                80