Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 9 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)
 09/20/2021   08:05:51   (   0.36,-104.18) (  -0.46,-100.55)  414.09                80
 09/21/2021   20:27:49   (  -0.35,-104.25) (  -0.70,-105.86)  183.46                80
 09/22/2021   20:11:44   (  -0.36,-104.26) (   0.30,-101.32)  334.33                80
 09/24/2021   08:33:33   (   0.34,-104.22) (   0.87,-106.60)  270.58                80
 09/25/2021   08:12:08   (   0.35,-104.21) (  -0.13,-102.06)  244.72                80
 09/26/2021   20:34:05   (  -0.33,-104.24) (  -1.03,-107.37)  357.16                80
 09/27/2021   20:18:01   (  -0.34,-104.25) (  -0.02,-102.84)  160.42                80
 09/29/2021   08:39:49   (   0.32,-104.24) (   1.19,-108.11)  440.82                80
 09/30/2021   08:18:25   (   0.33,-104.23) (   0.19,-103.58)   74.26                80
 10/02/2021   20:21:38   (  -0.31,-104.23) (  -0.33,-104.35)   14.42                80