Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2023 4 3.  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   ( -75.16, -55.27) 04/09/2023   02:43:42  ( -75.17, -57.07)   51.47                70
 04/09/2023   03:35:44   (  75.46, 111.14) 04/09/2023   03:34:32  (  75.47, 111.15)    0.56                72
 04/09/2023   04:26:28   ( -75.45, -81.52) 04/09/2023   04:25:35  ( -75.45, -81.65)    3.63                53
 04/09/2023   05:17:14   (  75.47,  85.73) 04/09/2023   05:16:31  (  75.48,  85.69)    1.34                43
 04/09/2023   06:07:59   ( -75.51,-107.07) 04/09/2023   06:07:33  ( -75.51,-106.96)    3.15                26
 04/09/2023   06:58:44   (  75.48,  60.33) 04/09/2023   06:58:30  (  75.49,  60.23)    2.80                14
 04/09/2023   07:49:29   ( -75.52,-132.48) 04/09/2023   07:49:32  ( -75.52,-132.41)    1.72                 3
 04/09/2023   08:40:15   (  75.54,  34.78) 04/09/2023   08:40:28  (  75.54,  34.92)    4.10                13
 04/09/2023   09:30:59   ( -75.53,-157.88) 04/09/2023   09:31:31  ( -75.53,-157.87)    0.40                32
 04/09/2023   10:21:44   (  75.55,   9.37) 04/09/2023   10:22:26  (  75.55,   9.46)    2.65                42
 04/09/2023   11:12:28   ( -75.54, 176.71) 04/09/2023   11:13:29  ( -75.54, 176.67)    1.22                61
 04/09/2023   12:03:14   (  75.56, -16.03) 04/09/2023   12:04:25  (  75.56, -15.99)    1.27                71