Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2021   08:20:02   (   0.02,-104.11) (  -0.10,-103.49)   69.93                80
 06/12/2021   20:23:17   (  -0.01,-104.32) (   0.01,-104.29)    4.51                80
 06/15/2021   08:23:41   (  -0.00,-104.09) (   0.21,-105.02)  105.84                80
 06/16/2021   08:07:36   (   0.01,-104.09) (  -0.78,-100.48)  410.71                80
 06/17/2021   20:26:55   (   0.02,-104.31) (  -0.34,-105.80)  170.53                80
 06/18/2021   20:10:51   (  -0.00,-104.31) (   0.71,-101.28)  345.72                80
 06/20/2021   08:29:59   (  -0.03,-104.08) (   0.50,-106.55)  281.29                80
 06/21/2021   08:13:55   (  -0.02,-104.07) (  -0.49,-102.01)  235.06                80
 06/22/2021   20:33:13   (   0.06,-104.30) (  -0.63,-107.33)  346.00                80
 06/23/2021   20:17:09   (   0.04,-104.29) (   0.36,-102.80)  169.89                80