Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 15.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/16/2019   22:02:04   (   0.02,-127.92) (  -0.38,-129.58)  189.27                80
 12/17/2019   21:45:59   (   0.01,-127.89) (   0.62,-125.04)  323.75                80
 12/19/2019   10:05:06   (  -0.03,-127.86) (   0.51,-130.32)  280.30                80
 12/20/2019   09:49:00   (  -0.02,-127.82) (  -0.49,-125.78)  232.49                80
 12/21/2019   22:08:16   (   0.04,-127.74) (  -0.70,-131.08)  381.12                80
 12/22/2019   21:52:10   (   0.03,-127.70) (   0.30,-126.55)  131.51                80
 12/24/2019   10:11:17   (  -0.04,-127.66) (   0.89,-131.81)  473.05                80
 12/25/2019   09:55:11   (  -0.03,-127.62) (  -0.11,-127.27)   39.18                80
 12/27/2019   21:55:41   (   0.03,-127.48) (  -0.07,-128.04)   63.31                80
 12/28/2019   21:39:35   (   0.02,-127.44) (   0.88,-123.49)  448.75                80