Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 5 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/28/2021   10:45:36   (  -0.00,-137.20) (   0.60,-139.79)  295.73                80
 05/29/2021   10:24:12   (  -0.01,-137.20) (  -0.44,-135.27)  220.16                80
 05/30/2021   22:46:10   (   0.00,-137.19) (  -0.75,-140.57)  385.10                80
 05/31/2021   22:30:06   (   0.01,-137.19) (   0.29,-136.05)  130.88                80
 06/02/2021   10:51:54   (  -0.00,-137.19) (   0.92,-141.31)  469.94                80
 06/03/2021   10:30:31   (  -0.00,-137.19) (  -0.12,-136.79)   45.91                80
 06/05/2021   22:33:44   (   0.00,-137.17) (  -0.08,-137.56)   44.37                80
 06/06/2021   22:17:39   (   0.01,-137.17) (   0.90,-133.03)  471.08                80
 06/08/2021   10:39:29   (  -0.01,-137.16) (   0.25,-138.30)  130.85                80
 06/09/2021   10:18:04   (  -0.01,-137.14) (  -0.74,-133.77)  384.02                80