Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 7 25.  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)
 07/26/2025   10:21:48   (  -0.03,-136.98) (  -0.69,-133.96)  343.08                80
 07/27/2025   22:41:06   (   0.04,-136.99) (  -0.48,-139.27)  260.38                80
 07/28/2025   22:25:01   (   0.04,-136.99) (   0.53,-134.74)  256.24                80
 07/30/2025   10:44:08   (  -0.04,-136.99) (   0.67,-140.01)  345.12                80
 07/31/2025   10:28:05   (  -0.04,-136.99) (  -0.40,-135.49)  171.14                80
 08/01/2025   22:47:21   (   0.05,-136.99) (  -0.81,-140.79)  433.39                80
 08/02/2025   22:31:17   (   0.05,-136.98) (   0.21,-136.26)   82.33                80
 08/05/2025   10:31:40   (  -0.06,-136.95) (  -0.02,-137.00)    6.25                80
 08/07/2025   22:34:52   (   0.07,-136.93) (  -0.10,-137.78)   96.73                80