Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 5 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/25/2021   22:42:31   (   0.01,-137.20) (  -0.40,-139.05)  211.27                80
 05/26/2021   22:21:08   (   0.01,-137.19) (   0.63,-134.53)  304.52                80
 05/28/2021   10:45:36   (  -0.01,-137.19) (   0.57,-139.79)  296.83                80
 05/29/2021   10:24:13   (  -0.01,-137.18) (  -0.46,-135.27)  218.49                80
 05/30/2021   22:46:10   (   0.01,-137.17) (  -0.73,-140.58)  387.93                80
 05/31/2021   22:30:06   (   0.01,-137.16) (   0.25,-136.04)  127.42                80
 06/02/2021   10:51:55   (  -0.00,-137.15) (   0.90,-141.32)  474.25                80
 06/03/2021   10:30:30   (  -0.01,-137.14) (  -0.08,-136.78)   40.91                80
 06/05/2021   22:33:44   (   0.00,-137.11) (  -0.07,-137.57)   51.05                80
 06/06/2021   22:17:40   (   0.01,-137.10) (   0.91,-133.03)  463.86                80