Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2021 10 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 10/28/2021   22:15:59   (  -0.17,-128.39) (  -1.16,-132.76)  499.04                80
 10/29/2021   21:59:56   (  -0.18,-128.40) (  -0.16,-128.23)   18.27                80
 11/01/2021   10:00:23   (   0.17,-128.42) (   0.27,-128.99)   65.04                80
 11/02/2021   09:44:20   (   0.18,-128.42) (  -0.73,-124.46)  451.96                80
 11/03/2021   22:03:38   (  -0.15,-128.43) (  -0.45,-129.77)  153.35                80
 11/04/2021   21:47:35   (  -0.17,-128.43) (   0.55,-125.24)  363.29                80
 11/06/2021   10:06:45   (   0.14,-128.43) (   0.61,-130.52)  238.21                80
 11/07/2021   09:50:42   (   0.15,-128.43) (  -0.39,-125.99)  277.75                80
 11/08/2021   22:10:00   (  -0.12,-128.42) (  -0.79,-131.30)  329.35                80
 11/09/2021   21:53:56   (  -0.14,-128.41) (   0.22,-126.77)  186.33                80