Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/17/2018   21:52:51   (  -0.10,-128.09) (   0.24,-126.61)  167.81                80
 11/19/2018   10:12:00   (   0.07,-128.24) (   0.90,-131.90)  417.35                80
 11/20/2018   09:55:55   (   0.08,-128.26) (  -0.12,-127.37)  102.14                80
 11/22/2018   21:59:07   (  -0.07,-128.22) (  -0.06,-128.14)    9.11                80
 11/25/2018   09:59:31   (   0.07,-128.39) (   0.17,-128.90)   57.89                80
 11/26/2018   09:43:26   (   0.08,-128.40) (  -0.85,-124.37)  460.41                80
 11/27/2018   22:02:43   (  -0.05,-128.32) (  -0.35,-129.67)  154.33                80
 11/28/2018   21:46:38   (  -0.06,-128.34) (   0.68,-125.15)  364.16                80
 11/30/2018   10:05:46   (   0.04,-128.48) (   0.46,-130.43)  222.23                80
 12/01/2018   09:49:41   (   0.05,-128.49) (  -0.51,-125.89)  295.76                80