Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 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)
 04/20/2021   20:13:51   (  -0.15,-104.30) (   0.19,-102.67)  185.65                80
 04/22/2021   08:35:38   (   0.15,-104.25) (   0.96,-107.94)  419.69                80
 04/23/2021   08:19:33   (   0.16,-104.25) (  -0.04,-103.40)   97.46                80
 04/25/2021   20:20:04   (  -0.16,-104.30) (  -0.12,-104.17)   14.90                80
 04/28/2021   08:23:04   (   0.15,-104.23) (   0.32,-104.89)   76.19                80
 04/29/2021   08:07:00   (   0.16,-104.23) (  -0.73,-100.37)  440.76                80
 04/30/2021   20:28:55   (  -0.15,-104.29) (  -0.47,-105.66)  156.95                80
 05/01/2021   20:07:30   (  -0.16,-104.28) (   0.53,-101.12)  358.51                80
 05/03/2021   08:29:17   (   0.15,-104.19) (   0.62,-106.40)  250.93                80