Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 5 15.  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)
 05/15/2025   20:28:39   (   0.02,-104.44) (   0.00,-105.89)  162.19                 0
 05/16/2025   20:11:10   (   0.02,-104.44) (   0.73,-101.30)  357.79                80
 05/18/2025   08:32:59   (  -0.01,-104.42) (   0.48,-106.58)  245.69                80
 05/19/2025   08:11:36   (  -0.01,-104.42) (  -0.54,-102.05)  270.38                80
 05/20/2025   20:33:33   (   0.01,-104.45) (  -0.65,-107.36)  331.51                80
 05/21/2025   20:17:30   (   0.01,-104.46) (   0.37,-102.83)  185.14                80
 05/23/2025   08:39:19   (  -0.00,-104.45) (   0.83,-108.11)  417.31                80
 05/24/2025   08:17:56   (  -0.01,-104.45) (  -0.20,-103.58)   98.76                80
 05/26/2025   20:23:49   (   0.00,-104.47) (   0.04,-104.37)   12.20                80
 05/29/2025   08:26:54   (   0.00,-104.46) (   0.17,-105.11)   74.10                80