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)
 06/22/2021   20:33:16   (   0.06,-104.33) (  -0.62,-107.35)  343.66                80
 06/23/2021   20:17:13   (   0.05,-104.33) (   0.41,-102.82)  172.67                80
 06/25/2021   08:36:21   (  -0.09,-104.09) (   0.82,-108.08)  454.91                80
 06/26/2021   08:20:18   (  -0.07,-104.09) (  -0.22,-103.56)   61.64                80
 06/28/2021   20:20:51   (   0.08,-104.33) (   0.05,-104.34)    3.17                80
 07/01/2021   08:23:56   (  -0.10,-104.11) (   0.14,-105.08)  111.22                80
 07/02/2021   08:07:53   (  -0.08,-104.11) (  -0.89,-100.55)  405.90                80
 07/03/2021   20:27:11   (   0.12,-104.36) (  -0.24,-105.87)  173.30                80
 07/04/2021   20:11:08   (   0.10,-104.36) (   0.80,-101.35)  343.82                80