Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 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)
 01/25/2019   21:56:15   (   0.06,-127.75) (  -0.03,-128.16)   47.16                80
 01/26/2019   21:40:09   (   0.06,-127.71) (   0.95,-123.63)  465.20                80
 01/28/2019   09:59:18   (  -0.06,-127.74) (   0.17,-128.91)  131.91                80
 01/29/2019   09:43:12   (  -0.05,-127.70) (  -0.81,-124.37)  380.30                80
 01/30/2019   22:02:27   (   0.05,-127.54) (  -0.45,-129.65)  241.16                80
 01/31/2019   21:46:22   (   0.05,-127.50) (   0.60,-125.13)  270.75                80
 02/02/2019   10:05:29   (  -0.05,-127.52) (   0.58,-130.40)  327.17                80
 02/03/2019   09:49:24   (  -0.04,-127.48) (  -0.41,-125.86)  184.50                80
 02/04/2019   22:08:39   (   0.05,-127.31) (  -0.79,-131.16)  437.47                80
 02/05/2019   21:52:34   (   0.04,-127.27) (   0.20,-126.62)   73.91                80