Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 4 27.  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)
 04/27/2025   22:48:57   (   0.01,-137.00) (  -0.76,-140.52)  400.03                80
 04/28/2025   22:27:34   (   0.01,-137.00) (   0.24,-135.99)  115.30                80
 04/30/2025   10:52:04   (  -0.01,-136.99) (   0.95,-141.27)  487.70                80
 05/01/2025   10:30:41   (  -0.01,-136.98) (  -0.06,-136.74)   27.23                80
 05/03/2025   22:33:54   (   0.00,-136.96) (  -0.15,-137.52)   64.27                80
 05/04/2025   22:17:51   (   0.00,-136.95) (   0.86,-132.99)  450.64                80
 05/06/2025   10:37:01   (   0.00,-136.93) (   0.31,-138.27)  152.91                80
 05/07/2025   10:20:58   (   0.00,-136.92) (  -0.71,-133.75)  361.87                80
 05/08/2025   22:40:15   (  -0.00,-136.91) (  -0.48,-139.06)  244.74                80
 05/09/2025   22:24:12   (  -0.00,-136.90) (   0.54,-134.53)  269.79                80
 05/11/2025   10:43:21   (   0.00,-136.87) (   0.68,-139.80)  334.60                80