Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NPP
TLE Epoch: 2023 9 21.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 09/21/2023   20:40:35   (   0.01,-104.68) (  -0.91,-108.86)  475.74                80
 09/22/2023   20:24:29   (   0.01,-104.68) (   0.07,-104.32)   40.92                80
 09/25/2023   08:27:30   (  -0.01,-104.70) (   0.06,-105.06)   39.87                80
 09/26/2023   08:06:03   (  -0.01,-104.70) (  -0.92,-100.51)  476.69                80
 09/27/2023   20:27:58   (   0.00,-104.67) (  -0.26,-105.81)  130.57                80
 09/28/2023   20:11:52   (   0.00,-104.67) (   0.78,-101.29)  386.47                80
 09/30/2023   08:33:37   (  -0.00,-104.71) (   0.43,-106.54)  209.84                80
 10/01/2023   08:12:12   (  -0.00,-104.71) (  -0.61,-102.02)  307.05                80
 10/02/2023   20:34:05   (  -0.00,-104.67) (  -0.62,-107.30)  300.32                80
 10/03/2023   20:18:00   (  -0.01,-104.68) (   0.43,-102.78)  216.79                80