Simultaneous Nadir Overpasses (SNOs) between GOES-15 and NPP
TLE Epoch: 2022 1 27.  Predictions up to the next  14.0 days:

     Date     Time(GOES-15)   GOES-15 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2022   22:08:47   (   0.04,-128.34) (  -0.56,-131.09)  312.72                80
 01/28/2022   21:52:41   (   0.03,-128.34) (   0.43,-126.55)  203.51                80
 01/30/2022   10:14:26   (  -0.02,-128.30) (   0.74,-131.81)  399.49                80
 01/31/2022   09:53:00   (  -0.02,-128.29) (  -0.25,-127.27)  116.32                80
 02/01/2022   22:14:54   (   0.03,-128.29) (  -0.91,-132.57)  487.85                80
 02/02/2022   21:58:47   (   0.02,-128.28) (   0.09,-128.03)   28.04                80
 02/05/2022   10:01:46   (  -0.02,-128.23) (   0.09,-128.75)   59.06                80
 02/06/2022   09:40:20   (  -0.02,-128.22) (  -0.91,-124.21)  456.54                80
 02/07/2022   22:02:14   (   0.02,-128.21) (  -0.24,-129.51)  147.71                80
 02/08/2022   21:46:08   (   0.01,-128.20) (   0.76,-124.97)  367.90                80