Simultaneous Nadir Overpasses (SNOs) between GOES-18 and NOAA-21
TLE Epoch: 2023 1 26.  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)
 01/26/2023   10:21:00   (  -0.01,-136.89) (  -0.71,-133.78)  354.15                80
 01/27/2023   22:40:15   (   0.02,-136.87) (  -0.47,-139.09)  252.00                80
 01/28/2023   22:24:10   (   0.02,-136.86) (   0.54,-134.55)  263.36                80
 01/30/2023   10:43:16   (  -0.02,-136.85) (   0.65,-139.82)  339.19                80
 01/31/2023   10:27:11   (  -0.02,-136.83) (  -0.37,-135.29)  175.69                80
 02/01/2023   22:46:26   (   0.03,-136.80) (  -0.80,-140.60)  431.80                80
 02/02/2023   22:30:21   (   0.03,-136.78) (   0.22,-136.06)   82.81                80
 02/05/2023   10:30:40   (  -0.04,-136.73) (  -0.01,-136.79)    6.79                80
 02/07/2023   22:33:49   (   0.04,-136.68) (  -0.17,-137.56)  100.54                80
 02/08/2023   22:17:44   (   0.04,-136.65) (   0.86,-133.03)  413.64                80