Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2019 12 17.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/17/2019   21:45:59   (   0.01,-127.89) (   0.65,-125.05)  323.93                80
 12/19/2019   10:05:05   (  -0.03,-127.86) (   0.54,-130.31)  280.25                80
 12/20/2019   09:49:00   (  -0.02,-127.82) (  -0.46,-125.78)  232.60                80
 12/21/2019   22:08:15   (   0.04,-127.74) (  -0.73,-131.08)  380.71                80
 12/22/2019   21:52:10   (   0.03,-127.70) (   0.27,-126.54)  131.97                80
 12/24/2019   10:11:17   (  -0.04,-127.66) (   0.87,-131.82)  472.75                80
 12/25/2019   09:55:11   (  -0.03,-127.62) (  -0.08,-127.27)   39.63                80
 12/27/2019   21:55:40   (   0.03,-127.49) (  -0.10,-128.03)   62.53                80
 12/28/2019   21:39:35   (   0.02,-127.44) (   0.90,-123.50)  449.50                80
 12/30/2019   09:58:41   (  -0.03,-127.40) (   0.29,-128.76)  155.93                80