Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 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)
 05/02/2019   10:39:33   (  -0.00,-137.20) (   0.26,-138.30)  125.55                80
 05/03/2019   10:18:09   (  -0.00,-137.19) (  -0.79,-133.77)  389.69                80
 05/04/2019   22:40:06   (   0.00,-137.16) (  -0.40,-139.08)  218.38                80
 05/05/2019   22:24:02   (   0.00,-137.15) (   0.59,-134.55)  296.75                80
 05/07/2019   10:45:50   (  -0.00,-137.15) (   0.61,-139.81)  304.32                80
 05/08/2019   10:24:27   (  -0.00,-137.13) (  -0.43,-135.29)  209.76                80
 05/09/2019   22:46:23   (   0.00,-137.08) (  -0.81,-140.59)  400.75                80
 05/10/2019   22:30:20   (  -0.00,-137.06) (   0.24,-136.07)  113.32                80
 05/12/2019   10:52:08   (   0.01,-137.05) (   0.96,-141.33)  488.29                80
 05/13/2019   10:30:43   (   0.01,-137.02) (  -0.03,-136.80)   25.17                80
 05/15/2019   22:33:56   (  -0.01,-136.93) (  -0.16,-137.57)   73.26                80