Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2022 12 30.  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)
 12/30/2022   10:24:46   (  -0.01,-137.34) (  -0.48,-135.27)  235.11                80
 12/31/2022   22:49:22   (  -0.00,-137.33) (  -0.71,-140.58)  370.39                80
 01/01/2023   22:30:37   (  -0.02,-137.33) (   0.25,-136.04)  145.77                80
 01/03/2023   10:52:25   (   0.02,-137.32) (   0.89,-141.33)  455.89                80
 01/04/2023   10:31:00   (   0.02,-137.31) (  -0.08,-136.79)   59.37                80
 01/06/2023   22:34:12   (  -0.02,-137.28) (  -0.07,-137.57)   32.87                80
 01/07/2023   22:18:06   (  -0.01,-137.27) (   0.91,-133.03)  481.96                80
 01/09/2023   10:39:54   (   0.01,-137.25) (   0.23,-138.32)  121.02                80
 01/10/2023   10:18:29   (   0.00,-137.24) (  -0.75,-133.78)  393.43                80
 01/11/2023   22:43:05   (  -0.00,-137.21) (  -0.42,-139.09)  214.65                80
 01/12/2023   22:21:41   (   0.00,-137.19) (   0.62,-134.57)  299.65                80