Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 4 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/30/2020   10:13:58   (  -0.12,-128.22) (   0.72,-131.87)  416.36                80
 05/01/2020   09:52:34   (  -0.14,-128.23) (  -0.36,-127.35)  100.93                80
 05/03/2020   21:55:45   (   0.12,-128.25) (   0.14,-128.11)   15.01                80
 05/06/2020   10:01:28   (  -0.11,-128.28) (   0.02,-128.85)   64.59                80
 05/07/2020   09:40:04   (  -0.13,-128.29) (  -1.01,-124.32)  451.96                80
 05/08/2020   22:04:40   (   0.10,-128.28) (  -0.18,-129.62)  152.67                80
 05/09/2020   21:43:15   (   0.12,-128.28) (   0.85,-125.10)  363.99                80
 05/11/2020   10:07:43   (  -0.09,-128.31) (   0.34,-130.36)  233.42                80
 05/12/2020   09:46:17   (  -0.10,-128.30) (  -0.63,-125.82)  282.69                80
 05/13/2020   22:10:54   (   0.07,-128.28) (  -0.54,-131.12)  323.06                80