Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 6 16.  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   18:29:30   ( -74.62,  69.90) 06/21/2023   18:28:22  ( -74.61,  67.34)   75.57                68
 06/21/2023   19:20:25   (  75.07,-124.04) 06/21/2023   19:19:15  (  75.07,-124.06)    0.82                70
 06/21/2023   20:11:09   ( -75.06,  43.31) 06/21/2023   20:10:11  ( -75.08,  43.24)    2.95                58
 06/21/2023   21:01:55   (  75.08,-149.43) 06/21/2023   21:01:14  (  75.07,-149.55)    3.52                41
 06/21/2023   21:52:40   ( -75.11,  17.78) 06/21/2023   21:52:10  ( -75.08,  17.75)    3.58                30
 06/21/2023   22:43:26   (  75.13,-174.96) 06/21/2023   22:43:12  (  75.12,-174.89)    2.35                14
 06/21/2023   23:34:10   ( -75.12,  -7.61) 06/21/2023   23:34:08  ( -75.13,  -7.59)    1.35                 2
 06/22/2023   00:24:56   (  75.13, 159.65) 06/22/2023   00:25:11  (  75.12, 159.62)    1.88                15
 06/22/2023   01:15:40   ( -75.12, -33.00) 06/22/2023   01:16:07  ( -75.13, -33.08)    2.31                27
 06/22/2023   02:06:26   (  75.14, 134.26) 06/22/2023   02:07:09  (  75.17, 134.28)    3.10                43
 06/22/2023   02:57:11   ( -75.18, -58.53) 06/22/2023   02:58:05  ( -75.18, -58.42)    3.17                54
 06/22/2023   03:47:57   (  75.19, 108.73) 06/22/2023   03:49:08  (  75.17, 108.79)    3.30                71
 06/22/2023   04:38:48   ( -75.51, -84.92) 06/22/2023   04:39:58  ( -75.46, -83.02)   53.23                70