Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 3 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 03/06/2020   21:45:55   (   0.34,-128.43) (   1.07,-125.14)  374.38                80
 03/08/2020   10:07:43   (  -0.34,-128.39) (   0.09,-130.41)  230.05                80
 03/09/2020   09:46:19   (  -0.34,-128.38) (  -0.91,-125.88)  284.97                80
 03/10/2020   22:08:15   (   0.33,-128.38) (  -0.30,-131.18)  319.30                80
 03/11/2020   21:52:11   (   0.34,-128.37) (   0.71,-126.65)  195.76                80
 03/13/2020   10:13:59   (  -0.33,-128.34) (   0.46,-131.93)  408.80                80
 03/14/2020   09:52:34   (  -0.33,-128.32) (  -0.55,-127.39)  105.64                80
 03/15/2020   22:14:31   (   0.32,-128.31) (  -0.66,-132.69)  499.88                80
 03/16/2020   21:58:26   (   0.32,-128.29) (   0.35,-128.16)   14.55                80
 03/19/2020   10:01:29   (  -0.31,-128.23) (  -0.14,-128.89)   76.35                80
 03/20/2020   09:40:05   (  -0.31,-128.21) (  -1.15,-124.36)  437.59                80