Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 8 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/30/2019   09:46:52   (   0.37,-128.38) (  -0.19,-125.76)  298.52                80
 08/31/2019   22:08:49   (  -0.37,-128.36) (  -1.00,-131.06)  308.64                80
 09/01/2019   21:52:44   (  -0.37,-128.35) (   0.02,-126.53)  206.92                80
 09/03/2019   10:14:33   (   0.37,-128.35) (   1.13,-131.80)  393.44                80
 09/04/2019   09:53:08   (   0.37,-128.33) (   0.11,-127.27)  121.44                80
 09/05/2019   22:15:04   (  -0.37,-128.29) (  -1.30,-132.57)  487.35                80
 09/06/2019   21:58:59   (  -0.37,-128.28) (  -0.34,-128.03)   27.75                80
 09/09/2019   10:02:03   (   0.36,-128.26) (   0.47,-128.77)   58.81                80
 09/10/2019   09:40:38   (   0.36,-128.24) (  -0.56,-124.24)  455.47                80
 09/11/2019   22:02:35   (  -0.35,-128.19) (  -0.63,-129.55)  154.46                80