Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2022   21:58:43   (  -0.13,-128.30) (  -0.04,-128.04)   31.23                80
 04/26/2022   10:01:44   (   0.13,-128.24) (   0.25,-128.76)   59.54                80
 04/27/2022   09:40:19   (   0.14,-128.22) (  -0.75,-124.22)  455.43                80
 04/28/2022   22:02:14   (  -0.12,-128.22) (  -0.44,-129.52)  148.86                80
 04/29/2022   21:46:10   (  -0.13,-128.20) (   0.62,-125.00)  366.27                80
 05/01/2022   10:05:16   (   0.12,-128.15) (   0.58,-130.26)  239.64                80
 05/02/2022   09:49:10   (   0.12,-128.13) (  -0.42,-125.72)  274.81                80
 05/03/2022   22:08:26   (  -0.11,-128.12) (  -0.77,-131.02)  331.14                80
 05/04/2022   21:52:20   (  -0.12,-128.09) (   0.24,-126.48)  183.29                80
 05/06/2022   10:11:27   (   0.10,-128.04) (   0.95,-131.74)  423.09                80