Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 5 29.  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   (  74.82, 165.30) 06/07/2023   00:04:41  (  74.82, 163.41)   55.18                70
 06/07/2023   00:56:42   ( -75.15, -28.31) 06/07/2023   00:55:33  ( -75.17, -28.26)    2.87                69
 06/07/2023   01:47:28   (  75.16, 138.96) 06/07/2023   01:46:33  (  75.15, 138.92)    2.26                55
 06/07/2023   02:38:12   ( -75.15, -53.70) 06/07/2023   02:37:32  ( -75.17, -53.74)    2.67                40
 06/07/2023   03:28:58   (  75.17, 113.57) 06/07/2023   03:28:31  (  75.20, 113.58)    3.14                27
 06/07/2023   04:19:42   ( -75.21, -79.23) 06/07/2023   04:19:30  ( -75.18, -79.23)    3.08                12
 06/07/2023   05:10:28   (  75.22,  88.04) 06/07/2023   05:10:29  (  75.20,  88.10)    2.85                 1
 06/07/2023   06:01:12   ( -75.21,-104.62) 06/07/2023   06:01:28  ( -75.23,-104.56)    2.39                16
 06/07/2023   06:51:58   (  75.23,  62.65) 06/07/2023   06:52:28  (  75.21,  62.62)    2.49                30
 06/07/2023   07:42:42   ( -75.22,-130.00) 06/07/2023   07:43:27  ( -75.23,-130.05)    2.10                45
 06/07/2023   08:33:28   (  75.23,  37.26) 06/07/2023   08:34:26  (  75.26,  37.28)    2.78                58
 06/07/2023   09:24:13   ( -75.27,-155.53) 06/07/2023   09:25:26  ( -75.23,-155.53)    3.70                73
 06/07/2023   10:15:09   (  75.75,  10.27) 06/07/2023   10:16:15  (  75.71,  13.31)   83.56                66