Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 3 25.  Predictions up to the next  14.0 days:

     Date     Time(GOES-17)   GOES-17 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 03/26/2023   08:32:21   (   0.01,-104.75) (   0.44,-106.59)  210.41                80
 03/27/2023   08:10:55   (   0.01,-104.75) (  -0.60,-102.06)  306.08                80
 03/28/2023   20:32:50   (  -0.00,-104.75) (  -0.60,-107.36)  297.42                80
 03/29/2023   20:16:44   (  -0.01,-104.75) (   0.44,-102.83)  219.51                80
 03/31/2023   08:38:30   (   0.01,-104.75) (   0.76,-108.09)  380.99                80
 04/01/2023   08:17:04   (   0.01,-104.75) (  -0.28,-103.56)  135.93                80
 04/02/2023   20:38:57   (  -0.01,-104.75) (  -0.95,-108.85)  467.39                80
 04/03/2023   20:22:52   (  -0.02,-104.76) (   0.11,-104.32)   50.03                80
 04/06/2023   08:25:52   (  -0.03,-104.76) (   0.02,-105.06)   33.70                80
 04/07/2023   08:04:25   (  -0.03,-104.76) (  -0.98,-100.52)  483.32                80