Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 05/13/2025   08:26:39   (   0.00,-104.40) (   0.15,-105.04)   72.66                80
 05/14/2025   08:05:16   (   0.00,-104.40) (  -0.87,-100.52)  442.99                80
 05/15/2025   20:27:13   (   0.00,-104.43) (  -0.32,-105.82)  159.41                80
 05/16/2025   20:11:10   (   0.01,-104.43) (   0.69,-101.30)  356.51                80
 05/18/2025   08:33:00   (  -0.01,-104.41) (   0.46,-106.58)  247.65                80
 05/19/2025   08:11:36   (  -0.02,-104.40) (  -0.56,-102.06)  267.92                80
 05/20/2025   20:33:34   (   0.01,-104.42) (  -0.63,-107.36)  334.95                80
 05/21/2025   20:17:29   (   0.01,-104.42) (   0.34,-102.83)  181.35                80
 05/23/2025   08:39:20   (  -0.02,-104.41) (   0.81,-108.11)  421.79                80
 05/24/2025   08:17:56   (  -0.02,-104.41) (  -0.22,-103.59)   93.85                80