Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2021   20:17:12   (   0.05,-104.33) (   0.39,-102.82)  172.69                80
 06/25/2021   08:36:21   (  -0.09,-104.09) (   0.84,-108.08)  454.95                80
 06/26/2021   08:20:17   (  -0.07,-104.09) (  -0.20,-103.55)   61.54                80
 06/28/2021   20:23:32   (   0.08,-104.33) (   0.09,-104.35)    1.86                80
 07/01/2021   08:23:57   (  -0.10,-104.11) (   0.10,-105.09)  111.20                80
 07/02/2021   08:07:52   (  -0.08,-104.11) (  -0.87,-100.55)  405.90                80
 07/03/2021   20:27:12   (   0.12,-104.36) (  -0.20,-105.88)  173.23                80
 07/04/2021   20:11:07   (   0.10,-104.36) (   0.78,-101.35)  343.91                80
 07/06/2021   08:30:17   (  -0.14,-104.13) (   0.39,-106.62)  282.82                80