Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and METOP-C
TLE Epoch: 2023 7 16.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 07/29/2023   23:20:28   ( -73.51,  -0.22) 07/29/2023   23:21:34  ( -73.42,   2.72)   93.29                66
 07/30/2023   00:11:09   (  73.28, 167.60) 07/30/2023   00:12:17  (  73.23, 169.62)   64.88                68
 07/30/2023   01:01:51   ( -73.17, -24.83) 07/30/2023   01:03:01  ( -73.15, -23.23)   51.48                70
 07/30/2023   01:52:33   (  72.99, 142.87) 07/30/2023   01:53:45  (  72.90, 143.58)   25.05                72