Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2020   10:39:29   (  -0.02,-137.19) (   0.21,-138.33)  130.32                80
 04/19/2020   10:18:04   (  -0.02,-137.19) (  -0.75,-133.79)  386.21                80
 04/20/2020   22:40:01   (   0.02,-137.19) (  -0.39,-139.11)  217.86                80
 04/21/2020   22:23:57   (   0.02,-137.19) (   0.63,-134.58)  298.49                80
 04/23/2020   10:45:44   (  -0.02,-137.18) (   0.56,-139.84)  302.58                80
 04/24/2020   10:24:20   (  -0.02,-137.18) (  -0.46,-135.31)  213.17                80
 04/25/2020   22:46:16   (   0.02,-137.16) (  -0.73,-140.61)  392.46                80
 04/26/2020   22:30:10   (   0.02,-137.15) (   0.23,-136.07)  122.91                80
 04/28/2020   10:51:59   (  -0.01,-137.13) (   0.91,-141.35)  479.63                80
 04/29/2020   10:30:33   (  -0.01,-137.12) (  -0.06,-136.80)   35.14                80