Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 30.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 07/01/2021   08:23:57   (  -0.10,-104.09) (   0.10,-105.08)  112.95                80
 07/02/2021   08:07:52   (  -0.08,-104.09) (  -0.87,-100.55)  403.86                80
 07/03/2021   20:27:12   (   0.12,-104.34) (  -0.21,-105.88)  174.84                80
 07/04/2021   20:11:07   (   0.11,-104.34) (   0.77,-101.34)  342.00                80
 07/06/2021   08:30:16   (  -0.15,-104.10) (   0.39,-106.62)  286.04                80
 07/07/2021   08:14:12   (  -0.13,-104.10) (  -0.58,-102.08)  230.50                80
 07/08/2021   20:33:31   (   0.17,-104.35) (  -0.49,-107.41)  348.93                80
 07/09/2021   20:17:27   (   0.15,-104.35) (   0.49,-102.88)  167.76                80
 07/11/2021   08:36:35   (  -0.19,-104.11) (   0.74,-108.14)  459.99                80
 07/12/2021   08:20:32   (  -0.18,-104.11) (  -0.30,-103.62)   56.43                80