Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 4 1.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/01/2020   21:58:26   (   0.26,-127.85) (   0.18,-128.13)   32.33                80
 04/02/2020   21:39:41   (   0.27,-127.82) (   1.19,-123.60)  480.09                80
 04/04/2020   10:01:29   (  -0.25,-127.74) (   0.01,-128.87)  128.66                80
 04/05/2020   09:40:04   (  -0.26,-127.70) (  -1.01,-124.34)  382.98                80
 04/06/2020   22:04:40   (   0.23,-127.65) (  -0.20,-129.64)  225.62                80
 04/07/2020   21:43:16   (   0.25,-127.61) (   0.82,-125.11)  286.23                80
 04/09/2020   10:07:43   (  -0.22,-127.53) (   0.38,-130.37)  322.55                80
 04/10/2020   09:46:18   (  -0.24,-127.49) (  -0.58,-125.83)  188.55                80
 04/11/2020   22:10:54   (   0.21,-127.43) (  -0.62,-131.13)  421.58                80
 04/12/2020   21:49:30   (   0.23,-127.39) (   0.40,-126.60)   89.65                80
 04/15/2020   09:55:11   (  -0.21,-127.25) (  -0.16,-127.32)    9.14                80