Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 4 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)
 04/17/2020   21:58:26   (   0.19,-127.96) (   0.12,-128.12)   19.01                80
 04/20/2020   10:01:29   (  -0.18,-128.03) (  -0.01,-128.87)   95.13                80
 04/21/2020   09:40:05   (  -0.19,-128.05) (  -1.03,-124.34)  423.45                80
 04/22/2020   22:04:41   (   0.16,-128.09) (  -0.17,-129.64)  176.52                80
 04/23/2020   21:43:17   (   0.18,-128.11) (   0.86,-125.11)  342.14                80
 04/25/2020   10:07:44   (  -0.15,-128.15) (   0.34,-130.37)  253.90                80
 04/26/2020   09:46:20   (  -0.17,-128.16) (  -0.68,-125.84)  263.86                80
 04/27/2020   22:10:56   (   0.14,-128.18) (  -0.51,-131.15)  338.01                80
 04/28/2020   21:49:31   (   0.16,-128.19) (   0.52,-126.62)  179.74                80
 04/30/2020   10:13:59   (  -0.12,-128.22) (   0.68,-131.88)  417.07                80
 05/01/2020   09:52:34   (  -0.14,-128.23) (  -0.34,-127.35)   99.94                80