Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 11 24.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/24/2019   22:14:48   (  -0.03,-128.44) (  -0.97,-132.64)  479.37                80
 11/25/2019   21:58:43   (  -0.05,-128.43) (   0.02,-128.11)   36.28                80
 11/28/2019   09:59:05   (   0.04,-128.43) (   0.13,-128.85)   47.57                80
 11/29/2019   09:42:59   (   0.05,-128.41) (  -0.86,-124.31)  467.57                80
 11/30/2019   22:02:16   (  -0.03,-128.35) (  -0.28,-129.62)  143.87                80
 12/01/2019   21:46:10   (  -0.04,-128.34) (   0.71,-125.09)  371.19                80
 12/03/2019   10:05:16   (   0.02,-128.35) (   0.49,-130.35)  228.70                80
 12/04/2019   09:49:12   (   0.03,-128.33) (  -0.56,-125.83)  286.20                80
 12/05/2019   22:08:27   (  -0.00,-128.27) (  -0.64,-131.12)  325.64                80
 12/06/2019   21:52:22   (  -0.01,-128.25) (   0.36,-126.59)  189.08                80
 12/08/2019   10:11:29   (  -0.01,-128.25) (   0.79,-131.86)  411.27                80