Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 5 30.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 06/07/2023   00:05:51   (  74.84, 165.26) 06/07/2023   00:04:41  (  74.80, 163.37)   55.29                70
 06/07/2023   00:56:42   ( -75.16, -28.35) 06/07/2023   00:55:33  ( -75.16, -28.30)    1.49                69
 06/07/2023   01:47:28   (  75.18, 138.92) 06/07/2023   01:46:32  (  75.18, 139.02)    2.97                56
 06/07/2023   02:38:12   ( -75.17, -53.74) 06/07/2023   02:37:32  ( -75.16, -53.79)    1.46                40
 06/07/2023   03:28:58   (  75.18, 113.53) 06/07/2023   03:28:31  (  75.18, 113.54)    0.46                27
 06/07/2023   04:19:42   ( -75.17, -79.13) 06/07/2023   04:19:31  ( -75.16, -79.27)    4.05                11
 06/07/2023   05:10:28   (  75.19,  88.14) 06/07/2023   05:10:30  (  75.19,  88.06)    2.26                 2
 06/07/2023   06:01:13   ( -75.22,-104.66) 06/07/2023   06:01:29  ( -75.21,-104.61)    1.83                16
 06/07/2023   06:51:59   (  75.24,  62.61) 06/07/2023   06:52:28  (  75.24,  62.72)    3.28                29
 06/07/2023   07:42:43   ( -75.23,-130.05) 06/07/2023   07:43:28  ( -75.22,-130.09)    1.74                45
 06/07/2023   08:33:29   (  75.24,  37.22) 06/07/2023   08:34:27  (  75.24,  37.24)    0.70                58
 06/07/2023   09:24:13   ( -75.23,-155.44) 06/07/2023   09:25:26  ( -75.27,-155.43)    3.73                73
 06/07/2023   10:15:10   (  75.77,  10.22) 06/07/2023   10:16:16  (  75.70,  13.27)   83.75                66