Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2025 5 25.  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)
 05/30/2025   18:36:00   ( -70.45,  76.79) 05/30/2025   18:34:52  ( -70.47,  74.53)   84.02                68
 05/30/2025   19:26:50   (  70.63,-116.19) 05/30/2025   19:25:40  (  70.66,-117.86)   61.91                70
 05/30/2025   20:17:44   ( -71.18,  50.21) 05/30/2025   20:16:35  ( -71.16,  50.24)    3.01                69
 05/30/2025   21:08:30   (  71.15,-142.44) 05/30/2025   21:07:27  (  71.15,-142.50)    2.34                63
 05/30/2025   21:59:14   ( -71.19,  24.83) 05/30/2025   21:58:31  ( -71.18,  24.80)    0.97                43
 05/30/2025   22:50:01   (  71.21,-167.90) 05/30/2025   22:49:22  (  71.22,-167.85)    2.70                39
 05/30/2025   23:40:45   ( -71.24,  -0.64) 05/30/2025   23:40:27  ( -71.21,  -0.64)    3.43                18
 05/31/2025   00:31:32   (  71.26, 166.63) 05/31/2025   00:31:18  (  71.25, 166.72)    3.48                14
 05/31/2025   01:22:15   ( -71.24, -26.02) 05/31/2025   01:22:23  ( -71.23, -26.08)    2.29                 8
 05/31/2025   02:13:02   (  71.26, 141.25) 05/31/2025   02:13:14  (  71.27, 141.28)    1.33                12
 05/31/2025   03:03:46   ( -71.30, -51.49) 05/31/2025   03:04:18  ( -71.31, -51.42)    2.72                32
 05/31/2025   03:54:33   (  71.32, 115.78) 05/31/2025   03:55:10  (  71.30, 115.84)    3.05                37
 05/31/2025   04:45:16   ( -71.30, -76.87) 05/31/2025   04:46:15  ( -71.28, -76.96)    3.61                59
 05/31/2025   05:36:03   (  71.32,  90.40) 05/31/2025   05:37:06  (  71.32,  90.40)    0.27                63
 05/31/2025   06:26:53   ( -71.66,-102.89) 05/31/2025   06:28:05  ( -71.61,-101.83)   37.41                72
 05/31/2025   07:17:44   (  71.89,  64.00) 05/31/2025   07:18:53  (  71.81,  65.82)   63.88                69