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   ( -75.39,  66.23) 04/23/2023   18:34:51  ( -75.37,  66.20)    3.12                71
 04/23/2023   19:26:47   (  75.37,-126.39) 04/23/2023   19:25:44  (  75.40,-126.42)    3.19                63
 04/23/2023   20:17:32   ( -75.41,  40.82) 04/23/2023   20:16:49  ( -75.42,  40.89)    2.62                43
 04/23/2023   21:08:18   (  75.43,-151.94) 04/23/2023   21:07:43  (  75.41,-151.89)    2.87                35
 04/23/2023   21:59:02   ( -75.42,  15.41) 04/23/2023   21:58:48  ( -75.43,  15.42)    1.68                14
 04/23/2023   22:49:48   (  75.44,-177.35) 04/23/2023   22:49:42  (  75.42,-177.35)    2.72                 6
 04/23/2023   23:40:32   ( -75.43, -10.00) 04/23/2023   23:40:47  ( -75.44, -10.04)    1.87                15
 04/24/2023   00:31:18   (  75.45, 157.24) 04/24/2023   00:31:40  (  75.47, 157.33)    3.35                22
 04/24/2023   01:22:02   ( -75.44, -35.41) 04/24/2023   01:22:46  ( -75.45, -35.50)    2.97                44
 04/24/2023   02:12:48   (  75.46, 131.83) 04/24/2023   02:13:39  (  75.48, 131.87)    2.15                51
 04/24/2023   03:03:33   ( -75.50, -60.96) 04/24/2023   03:04:44  ( -75.51, -60.82)    4.12                71
 04/24/2023   03:54:23   (  75.71, 105.68) 04/24/2023   03:55:34  (  75.67, 107.02)   36.92                71