Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 1 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/23/2019   09:55:45   (  -0.05,-127.94) (  -0.17,-127.40)   61.34                80
 01/25/2019   21:56:15   (   0.06,-127.75) (  -0.06,-128.16)   47.24                80
 01/26/2019   21:40:10   (   0.06,-127.71) (   0.99,-123.63)  465.18                80
 01/28/2019   09:59:17   (  -0.06,-127.74) (   0.20,-128.90)  131.91                80
 01/29/2019   09:43:12   (  -0.05,-127.70) (  -0.79,-124.36)  380.26                80
 01/30/2019   22:02:27   (   0.05,-127.54) (  -0.41,-129.66)  241.18                80
 01/31/2019   21:46:22   (   0.05,-127.50) (   0.58,-125.12)  270.69                80
 02/02/2019   10:05:29   (  -0.05,-127.52) (   0.61,-130.39)  327.24                80
 02/03/2019   09:49:24   (  -0.04,-127.48) (  -0.38,-125.85)  184.45                80
 02/04/2019   22:08:39   (   0.05,-127.31) (  -0.82,-131.15)  437.55                80
 02/05/2019   21:52:33   (   0.04,-127.27) (   0.17,-126.61)   73.83                80