Simultaneous Nadir Overpasses (SNOs) between GOES-14 and NPP
TLE Epoch: 2021 6 8.  Predictions up to the next  14.0 days:

     Date     Time(GOES-14)   GOES-14 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 06/09/2021   08:36:06   (   0.01,-104.11) (   0.90,-108.02)  446.67                80
 06/10/2021   08:20:03   (   0.02,-104.11) (  -0.14,-103.50)   69.91                80
 06/12/2021   20:23:17   (  -0.01,-104.32) (  -0.00,-104.29)    4.08                80
 06/15/2021   08:23:40   (  -0.00,-104.09) (   0.22,-105.02)  105.97                80
 06/16/2021   08:07:37   (   0.01,-104.09) (  -0.82,-100.49)  410.60                80
 06/17/2021   20:26:55   (   0.01,-104.31) (  -0.30,-105.81)  170.72                80
 06/18/2021   20:10:51   (  -0.00,-104.31) (   0.69,-101.28)  345.51                80
 06/20/2021   08:29:59   (  -0.03,-104.08) (   0.52,-106.54)  281.44                80
 06/21/2021   08:13:55   (  -0.02,-104.07) (  -0.46,-102.01)  234.89                80