Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2020 1 28.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/28/2020   21:55:27   (   0.04,-128.30) (   0.12,-128.03)   31.46                80
 01/31/2020   09:58:30   (  -0.04,-128.24) (   0.08,-128.77)   60.04                80
 02/01/2020   09:42:26   (  -0.04,-128.22) (  -0.92,-124.24)  453.65                80
 02/02/2020   22:04:23   (   0.03,-128.18) (  -0.25,-129.55)  154.68                80
 02/03/2020   21:42:59   (   0.03,-128.16) (   0.75,-125.01)  358.48                80
 02/05/2020   10:04:47   (  -0.03,-128.10) (   0.44,-130.28)  248.34                80
 02/06/2020   09:48:43   (  -0.02,-128.07) (  -0.56,-125.75)  264.45                80
 02/07/2020   22:10:38   (  -0.02,-128.03) (  -0.72,-131.04)  344.11                80
 02/08/2020   21:49:14   (  -0.01,-127.99) (   0.34,-126.52)  168.02                80
 02/10/2020   10:11:03   (   0.01,-127.92) (   0.86,-131.79)  440.35                80
 02/11/2020   09:54:58   (   0.01,-127.89) (  -0.14,-127.26)   71.75                80