Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2025 6 15.  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)
 06/16/2025   01:22:17   ( -70.74, -25.23) 06/16/2025   01:21:05  ( -70.77, -26.21)   36.18                72
 06/16/2025   02:13:08   (  70.96, 141.72) 06/16/2025   02:11:54  (  70.94, 141.37)   12.62                74
 06/16/2025   03:03:53   ( -71.06, -51.13) 06/16/2025   03:02:56  ( -71.05, -51.21)    3.07                57
 06/16/2025   03:54:40   (  71.07, 116.16) 06/16/2025   03:53:48  (  71.07, 116.11)    1.81                52
 06/16/2025   04:45:24   ( -71.11, -76.60) 06/16/2025   04:44:51  ( -71.12, -76.56)    1.70                33
 06/16/2025   05:36:11   (  71.12,  90.69) 06/16/2025   05:35:43  (  71.14,  90.76)    3.37                28
 06/16/2025   06:26:55   ( -71.17,-102.06) 06/16/2025   06:26:47  ( -71.15,-102.00)    3.27                 8
 06/16/2025   07:17:41   (  71.13,  65.31) 06/16/2025   07:17:40  (  71.12,  65.23)    3.33                 1
 06/16/2025   08:08:25   ( -71.17,-127.44) 06/16/2025   08:08:43  ( -71.17,-127.45)    0.27                18
 06/16/2025   08:59:12   (  71.18,  39.84) 06/16/2025   08:59:35  (  71.19,  39.87)    1.52                23
 06/16/2025   09:49:55   ( -71.17,-152.82) 06/16/2025   09:50:39  ( -71.19,-152.89)    3.09                44
 06/16/2025   10:40:43   (  71.24,  14.37) 06/16/2025   10:41:31  (  71.21,  14.43)    3.31                48
 06/16/2025   11:31:26   ( -71.23,-178.29) 06/16/2025   11:32:35  ( -71.21,-178.33)    2.19                69
 06/16/2025   12:22:13   (  71.24, -11.01) 06/16/2025   12:23:27  (  71.24, -11.01)    0.34                74
 06/16/2025   13:13:10   ( -71.95, 155.02) 06/16/2025   13:14:18  ( -71.90, 157.46)   84.31                68