Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2020   10:18:01   (  -0.01,-137.20) (  -0.75,-133.76)  391.47                80
 05/22/2020   22:42:37   (   0.01,-137.20) (  -0.42,-139.06)  212.47                80
 05/23/2020   22:21:13   (   0.01,-137.20) (   0.61,-134.54)  303.90                80
 05/25/2020   10:45:40   (  -0.01,-137.19) (   0.58,-139.80)  296.96                80
 05/26/2020   10:24:15   (  -0.01,-137.19) (  -0.46,-135.27)  218.86                80
 05/27/2020   22:46:11   (   0.01,-137.17) (  -0.77,-140.56)  386.74                80
 05/28/2020   22:30:06   (   0.01,-137.16) (   0.27,-136.04)  128.76                80
 05/30/2020   10:51:54   (  -0.00,-137.15) (   0.93,-141.30)  473.28                80
 05/31/2020   10:30:29   (  -0.00,-137.14) (  -0.11,-136.77)   41.97                80
 06/02/2020   22:33:40   (   0.00,-137.10) (  -0.08,-137.54)   49.84                80