Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and NOAA-19
TLE Epoch: 2024 12 18.  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)
 12/21/2024   11:51:36   ( -71.44, 176.54) 12/21/2024   11:50:29  ( -71.40, 173.89)   93.82                67
 12/21/2024   12:42:30   (  71.88, -16.94) 12/21/2024   12:41:18  (  71.91, -17.89)   32.96                72
 12/21/2024   13:33:20   ( -72.17, 149.82) 12/21/2024   13:32:11  ( -72.16, 149.87)    2.20                69
 12/21/2024   14:24:05   (  72.14, -42.82) 12/21/2024   14:23:10  (  72.16, -42.87)    2.72                55
 12/21/2024   15:14:50   ( -72.18, 124.42) 12/21/2024   15:14:08  ( -72.16, 124.39)    2.09                42
 12/21/2024   16:05:36   (  72.21, -68.32) 12/21/2024   16:05:06  (  72.22, -68.25)    2.65                30
 12/21/2024   16:56:20   ( -72.19,  99.03) 12/21/2024   16:56:04  ( -72.22,  99.01)    2.99                16
 12/21/2024   17:47:06   (  72.22, -93.71) 12/21/2024   17:47:03  (  72.22, -93.73)    0.74                 3
 12/21/2024   18:37:51   ( -72.25,  73.53) 12/21/2024   18:38:01  ( -72.22,  73.54)    3.50                10
 12/21/2024   19:28:37   (  72.28,-119.20) 12/21/2024   19:28:59  (  72.27,-119.11)    3.34                22
 12/21/2024   20:19:21   ( -72.26,  48.14) 12/21/2024   20:19:57  ( -72.27,  48.16)    1.42                36
 12/21/2024   21:10:07   (  72.29,-144.60) 12/21/2024   21:10:56  (  72.27,-144.59)    1.51                49
 12/21/2024   22:00:51   ( -72.27,  22.75) 12/21/2024   22:01:54  ( -72.28,  22.68)    2.34                63
 12/21/2024   22:51:38   (  72.35,-170.09) 12/21/2024   22:52:52  (  72.33,-169.97)    4.94                74
 12/21/2024   23:42:32   ( -72.84,  -3.78) 12/21/2024   23:43:41  ( -72.78,  -1.75)   67.01                69