Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2021 5 2.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/02/2021   10:30:06   (  -0.02,-137.19) (  -0.12,-136.71)   53.85                80
 05/04/2021   22:36:00   (   0.02,-137.18) (  -0.07,-137.49)   35.97                80
 05/05/2021   22:17:16   (   0.02,-137.17) (   0.96,-132.96)  479.52                80
 05/07/2021   10:39:05   (  -0.01,-137.16) (   0.25,-138.23)  122.99                80
 05/08/2021   10:17:41   (  -0.02,-137.15) (  -0.78,-133.71)  392.15                80
 05/09/2021   22:39:38   (   0.01,-137.14) (  -0.43,-139.01)  213.85                80
 05/10/2021   22:23:35   (   0.01,-137.13) (   0.60,-134.48)  301.05                80
 05/12/2021   10:45:24   (  -0.01,-137.10) (   0.56,-139.76)  302.41                80
 05/13/2021   10:24:00   (  -0.01,-137.09) (  -0.42,-135.23)  211.87                80
 05/14/2021   22:45:57   (   0.01,-137.06) (  -0.79,-140.53)  395.77                80
 05/15/2021   22:29:54   (   0.01,-137.04) (   0.25,-136.01)  118.18                80