Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 1 11.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/11/2022   22:09:11   (   0.05,-128.33) (  -0.57,-131.17)  324.10                80
 01/12/2022   21:53:05   (   0.04,-128.34) (   0.42,-126.63)  194.13                80
 01/14/2022   10:12:10   (  -0.05,-128.35) (   0.76,-131.89)  404.30                80
 01/15/2022   09:56:05   (  -0.04,-128.35) (  -0.28,-127.36)  113.47                80
 01/16/2022   22:15:19   (   0.04,-128.36) (  -0.90,-132.66)  489.81                80
 01/17/2022   21:59:13   (   0.03,-128.36) (   0.09,-128.12)   27.66                80
 01/20/2022   09:59:32   (  -0.04,-128.37) (   0.04,-128.85)   54.59                80
 01/21/2022   09:43:26   (  -0.03,-128.37) (  -0.95,-124.31)  462.49                80
 01/22/2022   22:02:40   (   0.04,-128.36) (  -0.23,-129.61)  141.69                80
 01/23/2022   21:46:34   (   0.04,-128.36) (   0.77,-125.07)  375.17                80