Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 12.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/12/2021   20:20:36   (  -0.01,-104.32) (  -0.03,-104.28)    5.15                80
 06/15/2021   08:23:41   (  -0.00,-104.09) (   0.19,-105.02)  105.65                80
 06/16/2021   08:07:37   (   0.01,-104.09) (  -0.80,-100.49)  410.97                80
 06/17/2021   20:26:55   (   0.02,-104.32) (  -0.32,-105.81)  170.15                80
 06/18/2021   20:10:50   (   0.00,-104.31) (   0.67,-101.27)  346.12                80
 06/20/2021   08:29:59   (  -0.04,-104.08) (   0.53,-106.54)  280.83                80
 06/21/2021   08:13:55   (  -0.02,-104.08) (  -0.51,-102.02)  235.59                80
 06/22/2021   20:33:14   (   0.06,-104.30) (  -0.60,-107.34)  345.40                80
 06/23/2021   20:17:09   (   0.04,-104.30) (   0.39,-102.80)  170.56                80
 06/25/2021   08:36:17   (  -0.08,-104.06) (   0.82,-108.07)  457.41                80