Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 6.  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)
 04/09/2023   02:44:52   ( -75.19, -55.35) 04/09/2023   02:43:41  ( -75.19, -57.00)   47.14                71
 04/09/2023   03:35:43   (  75.44, 111.21) 04/09/2023   03:34:32  (  75.45, 111.08)    3.81                71
 04/09/2023   04:26:28   ( -75.48, -81.60) 04/09/2023   04:25:34  ( -75.48, -81.58)    0.78                54
 04/09/2023   05:17:14   (  75.49,  85.66) 04/09/2023   05:16:30  (  75.50,  85.77)    3.20                44
 04/09/2023   06:07:58   ( -75.49,-107.01) 04/09/2023   06:07:33  ( -75.49,-107.03)    0.76                25
 04/09/2023   06:58:44   (  75.50,  60.26) 04/09/2023   06:58:29  (  75.51,  60.31)    1.84                15
 04/09/2023   07:49:28   ( -75.50,-132.41) 04/09/2023   07:49:32  ( -75.50,-132.49)    2.17                 4
 04/09/2023   08:40:14   (  75.51,  34.85) 04/09/2023   08:40:28  (  75.52,  34.85)    0.99                14
 04/09/2023   09:30:58   ( -75.51,-157.82) 04/09/2023   09:31:31  ( -75.51,-157.95)    3.60                33
 04/09/2023   10:21:44   (  75.52,   9.45) 04/09/2023   10:22:27  (  75.53,   9.40)    1.73                43
 04/09/2023   11:12:29   ( -75.57, 176.63) 04/09/2023   11:13:29  ( -75.57, 176.75)    3.24                60
 04/09/2023   12:03:14   (  75.54, -15.96) 04/09/2023   12:04:26  (  75.55, -16.06)    3.06                72