Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 2 13.  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)
 02/14/2023   20:20:24   (   0.02,-100.56) (  -0.80,-104.12)  406.90                80
 02/15/2023   20:04:17   (   0.03, -99.78) (   0.08, -99.56)   24.26                80
 02/16/2023   19:45:30   (   0.03, -98.99) (   0.91, -95.00)  455.50                80
 02/18/2023   08:04:34   (  -0.03, -97.78) (   0.49,-100.22)  277.78                80
 02/19/2023   07:48:27   (  -0.04, -97.00) (  -0.35, -95.65)  153.48                80
 02/21/2023   19:48:52   (   0.04, -95.05) (  -0.24, -96.34)  147.21                80
 02/22/2023   19:32:44   (   0.04, -94.27) (   0.60, -91.77)  284.85                80
 02/24/2023   07:51:48   (  -0.04, -93.07) (   0.83, -96.99)  446.52                80
 02/25/2023   07:33:00   (  -0.04, -92.30) (  -0.02, -92.42)   14.30                80
 02/26/2023   07:16:53   (  -0.04, -91.52) (  -0.87, -87.86)  417.81                80