Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2024 12 29.  Predictions up to the next  14.0 days:

     Date     Time(GOES-18)   GOES-18 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 12/29/2024   10:41:09   (   0.00,-136.98) (   0.34,-138.48)  170.68                80
 12/30/2024   10:19:42   (  -0.00,-136.97) (  -0.67,-133.94)  345.16                80
 12/31/2024   22:41:36   (   0.01,-136.97) (  -0.51,-139.24)  259.32                80
 01/01/2025   22:25:29   (   0.01,-136.95) (   0.51,-134.70)  256.24                80
 01/03/2025   10:44:34   (  -0.02,-136.92) (   0.67,-139.96)  347.06                80
 01/04/2025   10:28:28   (  -0.02,-136.90) (  -0.35,-135.43)  168.34                80
 01/05/2025   22:47:40   (   0.02,-136.89) (  -0.85,-140.72)  436.73                80
 01/06/2025   22:31:34   (   0.02,-136.87) (   0.17,-136.18)   78.43                80
 01/09/2025   10:31:52   (  -0.03,-136.80) (   0.01,-136.90)   11.36                80
 01/11/2025   22:34:57   (   0.04,-136.74) (  -0.15,-137.66)  103.66                80