Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2018 11 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 11/11/2018   22:02:40   (  -0.12,-127.88) (  -0.50,-129.61)  197.02                80
 11/12/2018   21:46:35   (  -0.13,-127.92) (   0.52,-125.08)  323.66                80
 11/14/2018   10:05:44   (   0.10,-128.07) (   0.62,-130.36)  261.67                80
 11/15/2018   09:49:39   (   0.11,-128.10) (  -0.40,-125.84)  258.25                80
 11/16/2018   22:08:55   (  -0.08,-128.05) (  -0.80,-131.14)  352.84                80
 11/17/2018   21:52:51   (  -0.10,-128.08) (   0.22,-126.61)  167.45                80
 11/19/2018   10:12:00   (   0.07,-128.24) (   0.86,-131.91)  417.44                80
 11/20/2018   09:55:55   (   0.08,-128.26) (  -0.10,-127.36)  102.10                80
 11/22/2018   21:59:07   (  -0.07,-128.22) (  -0.08,-128.14)    9.07                80