Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 5 20.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 05/21/2021   20:35:30   (  -0.10,-104.32) (  -0.73,-107.25)  333.59                80
 05/22/2021   20:14:06   (  -0.12,-104.31) (   0.24,-102.71)  182.28                80
 05/24/2021   08:35:54   (   0.09,-104.14) (   0.96,-107.98)  437.68                80
 05/25/2021   08:19:51   (   0.10,-104.15) (  -0.08,-103.46)   78.94                80
 05/27/2021   20:20:25   (  -0.09,-104.31) (  -0.08,-104.24)    7.98                80
 05/30/2021   08:23:29   (   0.08,-104.12) (   0.25,-104.98)   97.52                80
 05/31/2021   08:07:25   (   0.09,-104.12) (  -0.74,-100.45)  419.21                80
 06/01/2021   20:29:23   (  -0.07,-104.31) (  -0.39,-105.77)  166.17                80
 06/02/2021   20:07:59   (  -0.09,-104.30) (   0.59,-101.23)  350.11                80