Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 4.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/04/2021   08:29:48   (   0.05,-104.12) (   0.60,-106.50)  271.81                80
 06/05/2021   08:13:44   (   0.06,-104.12) (  -0.44,-101.97)  245.09                80
 06/06/2021   20:33:02   (  -0.03,-104.33) (  -0.69,-107.29)  337.41                80
 06/07/2021   20:16:58   (  -0.05,-104.33) (   0.29,-102.76)  178.84                80
 06/09/2021   08:36:06   (   0.01,-104.11) (   0.91,-108.02)  446.25                80
 06/10/2021   08:20:03   (   0.03,-104.11) (  -0.13,-103.50)   70.39                80
 06/12/2021   20:20:37   (  -0.01,-104.33) (  -0.01,-104.29)    4.69                80
 06/15/2021   08:23:41   (  -0.00,-104.10) (   0.18,-105.03)  104.99                80
 06/16/2021   08:07:37   (   0.02,-104.10) (  -0.81,-100.49)  411.69                80
 06/17/2021   20:26:55   (   0.01,-104.32) (  -0.31,-105.81)  169.71                80