Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 6 13.  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   ( -74.63,  69.88) 06/21/2023   18:28:22  ( -74.61,  67.34)   75.06                68
 06/21/2023   19:20:25   (  75.08,-124.07) 06/21/2023   19:19:15  (  75.06,-124.07)    1.87                70
 06/21/2023   20:11:09   ( -75.07,  43.29) 06/21/2023   20:10:11  ( -75.08,  43.24)    1.94                58
 06/21/2023   21:01:55   (  75.09,-149.46) 06/21/2023   21:01:13  (  75.11,-149.42)    3.15                42
 06/21/2023   21:52:40   ( -75.12,  17.76) 06/21/2023   21:52:09  ( -75.13,  17.90)    3.96                31
 06/21/2023   22:43:25   (  75.09,-174.85) 06/21/2023   22:43:12  (  75.11,-174.90)    2.91                13
 06/21/2023   23:34:10   ( -75.12,  -7.63) 06/21/2023   23:34:08  ( -75.13,  -7.59)    1.19                 2
 06/22/2023   00:24:56   (  75.14, 159.62) 06/22/2023   00:25:11  (  75.12, 159.61)    3.18                15
 06/22/2023   01:15:40   ( -75.13, -33.02) 06/22/2023   01:16:07  ( -75.13, -33.08)    1.59                27
 06/22/2023   02:06:26   (  75.15, 134.23) 06/22/2023   02:07:09  (  75.17, 134.27)    2.01                43
 06/22/2023   02:57:11   ( -75.18, -58.55) 06/22/2023   02:58:05  ( -75.18, -58.42)    3.81                54
 06/22/2023   03:47:56   (  75.16, 108.84) 06/22/2023   03:49:08  (  75.17, 108.79)    1.86                72
 06/22/2023   04:38:48   ( -75.52, -84.94) 06/22/2023   04:39:57  ( -75.50, -82.87)   57.61                69