Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 20.  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,  66.20) 04/23/2023   18:34:50  ( -75.40,  66.29)    2.58                72
 04/23/2023   19:26:47   (  75.37,-126.39) 04/23/2023   19:25:44  (  75.39,-126.46)    2.96                63
 04/23/2023   20:17:32   ( -75.41,  40.79) 04/23/2023   20:16:49  ( -75.41,  40.83)    1.28                43
 04/23/2023   21:08:18   (  75.43,-151.94) 04/23/2023   21:07:43  (  75.40,-151.92)    3.42                35
 04/23/2023   21:59:02   ( -75.43,  15.38) 04/23/2023   21:58:48  ( -75.42,  15.36)    1.22                14
 04/23/2023   22:49:48   (  75.44,-177.35) 04/23/2023   22:49:41  (  75.45,-177.24)    3.42                 7
 04/23/2023   23:40:32   ( -75.44, -10.03) 04/23/2023   23:40:47  ( -75.43, -10.10)    2.48                15
 04/24/2023   00:31:18   (  75.45, 157.24) 04/24/2023   00:31:40  (  75.46, 157.30)    1.91                22
 04/24/2023   01:22:02   ( -75.45, -35.43) 04/24/2023   01:22:45  ( -75.48, -35.41)    3.50                43
 04/24/2023   02:12:48   (  75.46, 131.83) 04/24/2023   02:13:39  (  75.47, 131.83)    0.78                51
 04/24/2023   03:03:32   ( -75.46, -60.84) 04/24/2023   03:04:44  ( -75.49, -60.88)    3.32                72
 04/24/2023   03:54:23   (  75.71, 105.68) 04/24/2023   03:55:34  (  75.66, 106.98)   36.04                71