Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and METOP-B
TLE Epoch: 2023 6 19.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(METOP-B) METOP-B Lat/Lon    Distance(km)  Time Diff(sec)
 07/02/2023   23:27:12   ( -73.55,  -1.98) 07/02/2023   23:28:18  ( -73.48,   1.05)   95.89                66
 07/03/2023   00:17:53   (  73.33, 165.85) 07/03/2023   00:19:01  (  73.29, 167.98)   67.98                68
 07/03/2023   01:08:36   ( -73.26, -26.69) 07/03/2023   01:09:45  ( -73.20, -24.90)   57.83                69
 07/03/2023   01:59:17   (  73.03, 141.12) 07/03/2023   02:00:29  (  72.97, 141.93)   27.18                72