Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2025 1 20.  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)
 01/20/2025   10:25:07   (   0.02,-137.01) (  -0.34,-135.28)  195.90                80
 01/21/2025   22:47:00   (  -0.02,-137.01) (  -0.82,-140.58)  405.99                80
 01/22/2025   22:30:52   (  -0.03,-137.01) (   0.19,-136.04)  111.45                80
 01/24/2025   10:52:35   (   0.03,-137.00) (   1.01,-141.28)  488.69                80
 01/25/2025   10:31:08   (   0.04,-136.99) (  -0.00,-136.74)   28.23                80
 01/27/2025   22:34:12   (  -0.04,-136.97) (  -0.18,-137.49)   58.88                80
 01/28/2025   22:18:04   (  -0.05,-136.96) (   0.85,-132.95)  457.45                80
 01/30/2025   10:39:48   (   0.05,-136.93) (   0.33,-138.20)  144.15                80
 01/31/2025   10:18:20   (   0.05,-136.92) (  -0.70,-133.66)  371.88                80
 02/01/2025   22:40:11   (  -0.05,-136.90) (  -0.49,-138.95)  232.79                80
 02/02/2025   22:24:03   (  -0.05,-136.88) (   0.49,-134.39)  283.05                80