Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and FY3D
TLE Epoch: 2024 6 23.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(FY3D) FY3D Lat/Lon    Distance(km)  Time Diff(sec)
 06/23/2024   04:10:53   (  81.11,  60.13) 06/23/2024   04:12:00  (  81.10,  60.23)    2.04                67
 06/23/2024   05:01:37   ( -81.10,-132.30) 06/23/2024   05:02:45  ( -81.11,-132.12)    3.17                68
 06/23/2024   05:52:22   (  81.10,  35.12) 06/23/2024   05:53:30  (  81.11,  35.12)    0.78                68
 06/23/2024   06:43:07   ( -81.10,-157.68) 06/23/2024   06:44:16  ( -81.11,-157.61)    1.21                69
 06/23/2024   07:33:52   (  81.10,   9.74) 06/23/2024   07:35:01  (  81.11,   9.63)    2.06                69
 06/23/2024   08:24:37   ( -81.10, 176.94) 06/23/2024   08:25:47  ( -81.11, 176.90)    0.81                70
 06/23/2024   09:15:23   (  81.11, -16.02) 06/23/2024   09:16:32  (  81.10, -15.87)    2.72                69
 06/23/2024   10:06:07   ( -81.10, 151.56) 06/23/2024   10:07:18  ( -81.10, 151.40)    2.76                71
 06/23/2024   10:56:52   (  81.10, -41.02) 06/23/2024   10:58:02  (  81.11, -40.98)    1.05                70
 06/23/2024   11:47:37   ( -81.10, 126.18) 06/23/2024   11:48:48  ( -81.11, 126.29)    1.88                71
 06/23/2024   12:38:22   (  81.10, -66.40) 06/23/2024   12:39:33  (  81.11, -66.47)    1.36                71
 06/23/2024   13:29:07   ( -81.10, 100.80) 06/23/2024   13:30:19  ( -81.11, 100.80)    0.18                72
 06/23/2024   14:19:52   (  81.10, -91.78) 06/23/2024   14:21:04  (  81.11, -91.97)    3.21                72
 06/23/2024   15:10:36   ( -81.11,  75.42) 06/23/2024   15:11:49  ( -81.10,  75.30)    2.07                73
 06/23/2024   16:01:21   (  81.10,-117.16) 06/23/2024   16:02:33  (  81.11,-117.08)    1.63                72
 06/23/2024   16:52:06   ( -81.11,  50.04) 06/23/2024   16:53:19  ( -81.11,  50.19)    2.56                73
 06/23/2024   17:42:51   (  81.10,-142.54) 06/23/2024   17:44:04  (  81.11,-142.57)    0.75                73
 06/23/2024   18:33:36   ( -81.11,  24.66) 06/23/2024   18:34:50  ( -81.11,  24.70)    0.59                74
 06/23/2024   19:24:21   (  81.10,-167.92) 06/23/2024   19:25:35  (  81.11,-168.07)    2.49                74
 06/23/2024   20:15:06   ( -81.11,  -0.72) 06/23/2024   20:16:21  ( -81.11,  -0.80)    1.39                75
 06/23/2024   21:05:51   (  81.10, 166.70) 06/23/2024   21:07:05  (  81.11, 166.82)    2.30                74
 06/23/2024   21:56:36   ( -81.11, -26.10) 06/23/2024   21:57:51  ( -81.11, -25.91)    3.24                75
 06/23/2024   22:47:21   (  81.10, 141.31) 06/23/2024   22:48:36  (  81.11, 141.33)    0.57                75