Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NOAA-21
TLE Epoch: 2025 7 13.  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)
 07/13/2025   20:24:18   (   0.01,-104.72) (   0.08,-104.49)   25.95                80
 07/16/2025   08:27:21   (  -0.01,-104.71) (   0.11,-105.23)   59.10                80
 07/17/2025   08:05:57   (  -0.01,-104.71) (  -0.89,-100.70)  457.13                80
 07/18/2025   20:27:54   (   0.01,-104.72) (  -0.30,-106.00)  146.83                80
 07/19/2025   20:11:49   (   0.01,-104.72) (   0.71,-101.47)  369.45                80
 07/21/2025   08:33:38   (  -0.00,-104.71) (   0.43,-106.75)  232.23                80
 07/22/2025   08:12:13   (   0.00,-104.70) (  -0.58,-102.22)  283.70                80
 07/23/2025   20:34:10   (  -0.01,-104.71) (  -0.66,-107.52)  320.84                80
 07/24/2025   20:18:05   (  -0.01,-104.71) (   0.35,-102.99)  195.48                80
 07/26/2025   08:39:53   (   0.01,-104.70) (   0.79,-108.26)  405.49                80
 07/27/2025   08:18:29   (   0.00,-104.70) (  -0.22,-103.73)  110.89                80