Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 6 10.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 06/10/2025   20:41:43   (   0.00,-104.73) (   0.00,-109.17)  493.28                 0
 06/11/2025   20:24:03   (   0.01,-104.74) (   0.10,-104.43)   35.65                80
 06/14/2025   08:27:07   (  -0.01,-104.76) (   0.11,-105.17)   47.46                80
 06/15/2025   08:05:43   (  -0.01,-104.76) (  -0.94,-100.65)  469.41                80
 06/16/2025   20:27:41   (   0.01,-104.78) (  -0.26,-105.95)  134.05                80
 06/17/2025   20:11:37   (   0.01,-104.79) (   0.78,-101.43)  383.14                80
 06/19/2025   08:33:26   (  -0.00,-104.80) (   0.40,-106.70)  216.05                80
 06/20/2025   08:12:01   (  -0.01,-104.81) (  -0.59,-102.17)  300.87                80
 06/21/2025   20:33:58   (   0.00,-104.82) (  -0.61,-107.47)  303.19                80
 06/22/2025   20:17:55   (   0.00,-104.83) (   0.44,-102.95)  213.75                80
 06/24/2025   08:39:43   (   0.00,-104.84) (   0.74,-108.23)  385.56                80