Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 5.  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   ( -75.17, -55.29) 04/09/2023   02:43:42  ( -75.16, -57.09)   51.34                70
 04/09/2023   03:35:44   (  75.47, 111.12) 04/09/2023   03:34:32  (  75.46, 111.13)    0.67                72
 04/09/2023   04:26:28   ( -75.46, -81.54) 04/09/2023   04:25:34  ( -75.49, -81.52)    3.64                54
 04/09/2023   05:17:14   (  75.48,  85.72) 04/09/2023   05:16:31  (  75.47,  85.68)    1.24                43
 04/09/2023   06:07:59   ( -75.52,-107.09) 04/09/2023   06:07:33  ( -75.50,-106.98)    3.60                26
 04/09/2023   06:58:44   (  75.49,  60.31) 04/09/2023   06:58:30  (  75.48,  60.22)    2.67                14
 04/09/2023   07:49:29   ( -75.53,-132.50) 04/09/2023   07:49:32  ( -75.52,-132.43)    2.26                 3
 04/09/2023   08:40:14   (  75.50,  34.91) 04/09/2023   08:40:29  (  75.49,  34.76)    4.14                15
 04/09/2023   09:30:59   ( -75.54,-157.91) 04/09/2023   09:31:31  ( -75.53,-157.89)    1.22                32
 04/09/2023   10:21:45   (  75.55,   9.35) 04/09/2023   10:22:27  (  75.55,   9.45)    2.73                42
 04/09/2023   11:12:29   ( -75.55, 176.69) 04/09/2023   11:13:30  ( -75.54, 176.65)    1.41                61
 04/09/2023   12:03:15   (  75.56, -16.05) 04/09/2023   12:04:26  (  75.56, -16.01)    1.27                71