Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 6 12.  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)
 06/21/2023   18:29:29   ( -74.58,  70.01) 06/21/2023   18:28:22  ( -74.60,  67.32)   79.55                67
 06/21/2023   19:20:25   (  75.08,-124.07) 06/21/2023   19:19:15  (  75.05,-124.10)    2.97                70
 06/21/2023   20:11:09   ( -75.07,  43.29) 06/21/2023   20:10:11  ( -75.07,  43.22)    2.02                58
 06/21/2023   21:01:55   (  75.09,-149.46) 06/21/2023   21:01:13  (  75.10,-149.44)    1.99                42
 06/21/2023   21:52:40   ( -75.12,  17.76) 06/21/2023   21:52:09  ( -75.12,  17.87)    3.33                31
 06/21/2023   22:43:25   (  75.09,-174.85) 06/21/2023   22:43:12  (  75.11,-174.92)    2.48                13
 06/21/2023   23:34:10   ( -75.13,  -7.63) 06/21/2023   23:34:08  ( -75.12,  -7.61)    0.79                 2
 06/22/2023   00:24:56   (  75.15, 159.61) 06/22/2023   00:25:10  (  75.15, 159.73)    3.50                14
 06/22/2023   01:15:40   ( -75.13, -33.03) 06/22/2023   01:16:07  ( -75.12, -33.10)    2.37                27
 06/22/2023   02:06:26   (  75.15, 134.22) 06/22/2023   02:07:09  (  75.16, 134.25)    0.86                43
 06/22/2023   02:57:11   ( -75.18, -58.56) 06/22/2023   02:58:05  ( -75.17, -58.44)    3.54                54
 06/22/2023   03:47:56   (  75.16, 108.83) 06/22/2023   03:49:08  (  75.16, 108.76)    1.99                72
 06/22/2023   04:38:48   ( -75.52, -84.95) 06/22/2023   04:39:57  ( -75.49, -82.90)   57.07                69