Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 4 23.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 04/23/2021   08:19:33   (   0.16,-104.25) (  -0.05,-103.40)   97.64                80
 04/24/2021   20:41:29   (  -0.15,-104.32) (  -1.11,-108.71)  499.92                80
 04/25/2021   20:20:04   (  -0.15,-104.31) (  -0.11,-104.17)   15.98                80
 04/28/2021   08:23:05   (   0.15,-104.24) (   0.32,-104.89)   75.04                80
 04/29/2021   08:07:00   (   0.15,-104.24) (  -0.74,-100.37)  442.07                80
 04/30/2021   20:28:55   (  -0.15,-104.31) (  -0.47,-105.66)  155.05                80
 05/01/2021   20:07:30   (  -0.15,-104.29) (   0.52,-101.12)  360.62                80
 05/03/2021   08:29:17   (   0.15,-104.21) (   0.62,-106.40)  248.87                80
 05/04/2021   08:13:12   (   0.16,-104.21) (  -0.38,-101.86)  268.44                80
 05/05/2021   20:35:08   (  -0.15,-104.31) (  -0.77,-107.17)  325.56                80
 05/06/2021   20:13:43   (  -0.16,-104.30) (   0.23,-102.63)  190.69                80