Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 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)
 04/23/2023   18:36:02   ( -75.40,  66.22) 04/23/2023   18:34:50  ( -75.41,  66.33)    3.27                72
 04/23/2023   19:26:47   (  75.37,-126.40) 04/23/2023   19:25:44  (  75.39,-126.44)    2.51                63
 04/23/2023   20:17:32   ( -75.41,  40.81) 04/23/2023   20:16:49  ( -75.42,  40.87)    1.78                43
 04/23/2023   21:08:17   (  75.38,-151.81) 04/23/2023   21:07:43  (  75.40,-151.91)    3.43                34
 04/23/2023   21:59:02   ( -75.42,  15.40) 04/23/2023   21:58:48  ( -75.43,  15.40)    0.63                14
 04/23/2023   22:49:48   (  75.44,-177.36) 04/23/2023   22:49:42  (  75.41,-177.37)    3.62                 6
 04/23/2023   23:40:32   ( -75.43, -10.01) 04/23/2023   23:40:47  ( -75.44, -10.06)    1.53                15
 04/24/2023   00:31:18   (  75.45, 157.23) 04/24/2023   00:31:40  (  75.47, 157.32)    2.62                22
 04/24/2023   01:22:02   ( -75.44, -35.42) 04/24/2023   01:22:46  ( -75.45, -35.52)    2.99                44
 04/24/2023   02:12:48   (  75.47, 131.82) 04/24/2023   02:13:39  (  75.48, 131.85)    1.26                51
 04/24/2023   03:03:33   ( -75.50, -60.97) 04/24/2023   03:04:44  ( -75.50, -60.84)    3.74                71
 04/24/2023   03:54:23   (  75.71, 105.68) 04/24/2023   03:55:34  (  75.67, 107.00)   36.75                71