Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 4 6.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/06/2020   22:04:40   (   0.23,-127.66) (  -0.22,-129.63)  224.45                80
 04/07/2020   21:45:56   (   0.24,-127.63) (   0.80,-125.10)  287.65                80
 04/09/2020   10:07:43   (  -0.22,-127.54) (   0.40,-130.36)  321.56                80
 04/10/2020   09:46:18   (  -0.24,-127.50) (  -0.62,-125.83)  189.70                80
 04/11/2020   22:10:55   (   0.21,-127.45) (  -0.59,-131.13)  419.31                80
 04/12/2020   21:52:09   (   0.22,-127.41) (   0.38,-126.59)   92.23                80
 04/15/2020   09:55:12   (  -0.21,-127.27) (  -0.19,-127.33)    6.23                80
 04/17/2020   21:58:23   (   0.19,-127.17) (  -0.04,-128.08)  105.34                80
 04/18/2020   21:36:58   (   0.20,-127.12) (   0.98,-123.56)  405.89                80
 04/20/2020   10:01:26   (  -0.17,-127.03) (   0.22,-128.82)  203.42                80