Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/10/2020   22:08:15   (   0.33,-128.39) (  -0.32,-131.18)  318.56                80
 03/11/2020   21:52:11   (   0.34,-128.38) (   0.75,-126.66)  196.67                80
 03/13/2020   10:13:59   (  -0.33,-128.34) (   0.47,-131.92)  408.67                80
 03/14/2020   09:52:34   (  -0.33,-128.32) (  -0.53,-127.39)  105.88                80
 03/15/2020   22:14:30   (   0.32,-128.32) (  -0.68,-132.69)  498.49                80
 03/16/2020   21:58:26   (   0.32,-128.30) (   0.33,-128.16)   16.25                80
 03/19/2020   10:01:30   (  -0.31,-128.24) (  -0.18,-128.90)   75.38                80
 03/20/2020   09:40:05   (  -0.31,-128.22) (  -1.19,-124.37)  438.67                80
 03/21/2020   22:02:02   (   0.30,-128.21) (  -0.01,-129.67)  166.43                80
 03/22/2020   21:45:57   (   0.30,-128.19) (   1.00,-125.14)  347.82                80
 03/24/2020   10:07:44   (  -0.29,-128.14) (   0.22,-130.40)  257.86                80