Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2019 10 16.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/16/2019   22:46:51   (  -0.00,-137.20) (  -0.74,-140.62)  389.39                80
 10/17/2019   22:30:46   (  -0.02,-137.19) (   0.24,-136.08)  126.65                80
 10/19/2019   10:52:33   (   0.01,-137.18) (   0.95,-141.35)  475.74                80
 10/20/2019   10:31:09   (   0.01,-137.17) (  -0.09,-136.83)   39.31                80
 10/22/2019   22:34:20   (  -0.00,-137.13) (  -0.08,-137.60)   53.02                80
 10/23/2019   22:15:34   (  -0.00,-137.12) (   0.90,-133.07)  461.64                80
 10/25/2019   10:40:01   (   0.01,-137.09) (   0.28,-138.34)  141.81                80
 10/26/2019   10:18:36   (   0.01,-137.07) (  -0.70,-133.80)  372.62                80
 10/27/2019   22:40:31   (  -0.02,-137.04) (  -0.51,-139.10)  234.99                80
 10/28/2019   22:24:27   (  -0.02,-137.02) (   0.53,-134.58)  279.14                80