Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 8 5.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 08/05/2021   21:52:54   (   0.17,-127.95) (   0.43,-126.70)  142.59                80
 08/07/2021   10:12:03   (  -0.19,-128.08) (   0.71,-131.98)  444.91                80
 08/08/2021   09:55:59   (  -0.18,-128.10) (  -0.34,-127.45)   73.62                80
 08/10/2021   21:56:32   (   0.19,-128.05) (   0.13,-128.22)   20.92                80
 08/11/2021   21:40:29   (   0.18,-128.06) (   1.18,-123.70)  497.31                80
 08/13/2021   09:59:38   (  -0.20,-128.18) (  -0.05,-128.98)   91.10                80
 08/14/2021   09:43:34   (  -0.19,-128.19) (  -1.04,-124.45)  426.82                80
 08/15/2021   22:02:51   (   0.22,-128.11) (  -0.15,-129.75)  187.01                80
 08/16/2021   21:46:46   (   0.21,-128.12) (   0.84,-125.22)  330.15                80
 08/18/2021   10:05:56   (  -0.23,-128.22) (   0.29,-130.50)  260.13                80