Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 4 13.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/13/2022   21:46:19   (  -0.13,-128.40) (   0.65,-125.04)  383.90                80
 04/15/2022   10:08:05   (   0.12,-128.38) (   0.58,-130.29)  219.14                80
 04/16/2022   09:46:41   (   0.13,-128.37) (  -0.47,-125.77)  296.65                80
 04/17/2022   22:08:36   (  -0.12,-128.37) (  -0.74,-131.07)  307.64                80
 04/18/2022   21:52:31   (  -0.12,-128.36) (   0.31,-126.54)  207.87                80
 04/20/2022   10:14:18   (   0.12,-128.32) (   0.90,-131.80)  396.32                80
 04/21/2022   09:52:52   (   0.13,-128.30) (  -0.09,-127.26)  118.45                80
 04/22/2022   22:14:49   (  -0.12,-128.29) (  -1.06,-132.57)  487.77                80
 04/23/2022   21:58:43   (  -0.13,-128.27) (  -0.06,-128.03)   27.11                80
 04/26/2022   09:59:04   (   0.13,-128.21) (   0.28,-128.75)   62.72                80