Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/09/2018   10:00:12   (   0.13,-127.91) (   0.33,-128.83)  105.21                36
 11/10/2018   09:40:43   (   0.15,-127.97) (  -0.69,-124.30)  418.22                80
 11/11/2018   22:02:40   (  -0.12,-127.99) (  -0.46,-129.62)  185.74                80
 11/12/2018   21:46:36   (  -0.13,-128.05) (   0.56,-125.09)  337.92                80
 11/14/2018   10:05:44   (   0.10,-128.23) (   0.58,-130.37)  243.72                80
 11/15/2018   09:49:40   (   0.11,-128.29) (  -0.43,-125.84)  279.23                80
 11/16/2018   22:08:57   (  -0.08,-128.29) (  -0.71,-131.16)  326.30                80
 11/17/2018   21:52:53   (  -0.10,-128.36) (   0.31,-126.63)  196.93                80
 11/19/2018   10:12:01   (   0.07,-128.54) (   0.83,-131.91)  384.45                80
 11/20/2018   09:55:56   (   0.08,-128.60) (  -0.19,-127.39)  138.08                80
 11/21/2018   22:15:14   (  -0.06,-128.58) (  -0.95,-132.70)  469.09                80