Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2025 4 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)
 04/16/2025   08:32:43   (  -0.02,-104.37) (   0.43,-106.50)  242.33                80
 04/17/2025   08:11:16   (  -0.03,-104.36) (  -0.57,-101.96)  274.28                80
 04/18/2025   20:33:10   (   0.02,-104.39) (  -0.62,-107.25)  325.82                80
 04/19/2025   20:17:03   (   0.02,-104.39) (   0.39,-102.71)  191.09                80
 04/21/2025   08:38:49   (  -0.01,-104.35) (   0.78,-107.97)  412.25                80
 04/22/2025   08:17:22   (  -0.01,-104.35) (  -0.23,-103.43)  104.43                80
 04/23/2025   20:39:14   (   0.00,-104.37) (  -1.00,-108.72)  495.95                80
 04/24/2025   20:23:08   (   0.01,-104.37) (   0.02,-104.18)   21.30                80
 04/27/2025   08:26:07   (  -0.01,-104.33) (   0.12,-104.90)   64.88                80
 04/28/2025   08:04:40   (  -0.01,-104.33) (  -0.90,-100.37)  451.66                80