Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/09/2020   09:46:18   (  -0.34,-128.38) (  -0.89,-125.88)  284.84                80
 03/10/2020   22:08:16   (   0.33,-128.39) (  -0.26,-131.19)  318.82                80
 03/11/2020   21:52:11   (   0.34,-128.38) (   0.75,-126.66)  196.36                80
 03/13/2020   10:13:59   (  -0.33,-128.34) (   0.48,-131.92)  408.53                80
 03/14/2020   09:52:34   (  -0.33,-128.32) (  -0.53,-127.39)  105.99                80
 03/15/2020   22:14:30   (   0.32,-128.32) (  -0.68,-132.69)  498.94                80
 03/16/2020   21:58:26   (   0.32,-128.30) (   0.33,-128.16)   15.82                80
 03/19/2020   10:01:30   (  -0.31,-128.24) (  -0.18,-128.90)   75.46                80
 03/20/2020   09:40:05   (  -0.31,-128.22) (  -1.19,-124.37)  438.53                80
 03/21/2020   22:02:02   (   0.30,-128.20) (  -0.02,-129.67)  167.11                80