Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2020 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/24/2020   10:24:20   (  -0.02,-137.20) (  -0.47,-135.31)  215.42                80
 04/25/2020   22:46:16   (   0.02,-137.19) (  -0.72,-140.61)  390.01                80
 04/26/2020   22:30:11   (   0.02,-137.18) (   0.24,-136.07)  125.70                80
 04/28/2020   10:51:58   (  -0.01,-137.17) (   0.95,-141.34)  475.93                80
 04/29/2020   10:30:33   (  -0.01,-137.15) (  -0.07,-136.81)   39.20                80
 05/01/2020   22:33:45   (   0.01,-137.11) (  -0.09,-137.58)   53.10                80
 05/02/2020   22:17:41   (   0.01,-137.10) (   0.94,-133.05)  461.61                80
 05/04/2020   10:39:28   (  -0.00,-137.07) (   0.26,-138.31)  141.36                80
 05/05/2020   10:18:03   (  -0.00,-137.05) (  -0.71,-133.77)  372.95                80
 05/06/2020   22:39:59   (   0.00,-137.01) (  -0.47,-139.08)  235.40                80