Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 3 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/22/2020   10:45:41   (  -0.00,-137.21) (   0.59,-139.83)  298.90                80
 03/23/2020   10:24:17   (  -0.00,-137.21) (  -0.42,-135.30)  217.65                80
 03/24/2020   22:46:13   (   0.00,-137.21) (  -0.79,-140.60)  386.78                80
 03/25/2020   22:30:09   (   0.00,-137.21) (   0.23,-136.07)  129.71                80
 03/27/2020   10:51:57   (  -0.00,-137.21) (   0.92,-141.35)  470.99                80
 03/28/2020   10:30:33   (  -0.00,-137.21) (  -0.09,-136.82)   44.80                80
 03/30/2020   22:33:44   (   0.00,-137.19) (  -0.10,-137.59)   45.94                80
 03/31/2020   22:17:40   (   0.00,-137.17) (   0.91,-133.06)  469.23                80
 04/02/2020   10:39:28   (  -0.00,-137.16) (   0.24,-138.33)  133.39                80
 04/03/2020   10:18:04   (  -0.00,-137.14) (  -0.78,-133.80)  381.15                80