Simultaneous Nadir Overpasses (SNOs) between GOES-17 and NOAA-21
TLE Epoch: 2023 1 23.  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)
 01/25/2023   21:36:51   (  -0.02,-121.28) (  -0.44,-123.24)  222.10                80
 01/26/2023   21:20:42   (  -0.01,-120.13) (   0.33,-118.65)  169.32                80
 01/29/2023   09:20:52   (   0.02,-117.21) (   0.49,-119.24)  232.23                80
 01/30/2023   09:04:42   (   0.02,-116.05) (  -0.29,-114.65)  158.94                80
 02/01/2023   21:05:01   (  -0.02,-113.14) (  -0.50,-115.29)  245.07                80
 02/02/2023   20:48:52   (  -0.02,-111.98) (   0.28,-110.70)  145.98                80
 02/05/2023   08:49:01   (   0.03,-109.04) (   0.51,-111.30)  256.17                80
 02/06/2023   08:32:51   (   0.03,-107.89) (  -0.23,-106.70)  134.90                80