Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 21.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 12/26/2023   17:22:43   ( -75.84,  95.89) 12/26/2023   17:21:36  ( -75.82,  93.11)   75.63                67
 12/26/2023   18:13:37   (  76.18, -97.99) 12/26/2023   18:12:23  (  76.18, -98.33)    9.27                74
 12/26/2023   19:04:22   ( -76.24,  69.10) 12/26/2023   19:03:24  ( -76.24,  69.16)    1.54                58
 12/26/2023   19:55:08   (  76.22,-123.51) 12/26/2023   19:54:19  (  76.24,-123.57)    3.18                49
 12/26/2023   20:45:53   ( -76.24,  43.74) 12/26/2023   20:45:22  ( -76.27,  43.76)    3.32                31
 12/26/2023   21:36:40   (  76.26,-149.03) 12/26/2023   21:36:17  (  76.27,-148.98)    1.61                23
 12/26/2023   22:27:25   ( -76.28,  18.22) 12/26/2023   22:27:21  ( -76.25,  18.19)    3.39                 4
 12/26/2023   23:18:11   (  76.25,-174.38) 12/26/2023   23:18:15  (  76.29,-174.38)    4.09                 4
 12/27/2023   00:08:56   ( -76.27,  -7.13) 12/27/2023   00:09:19  ( -76.27,  -7.22)    2.14                23
 12/27/2023   00:59:43   (  76.29, 160.09) 12/27/2023   01:00:14  (  76.27, 160.05)    2.86                31
 12/27/2023   01:50:28   ( -76.31, -32.66) 12/27/2023   01:51:17  ( -76.30, -32.62)    1.94                49
 12/27/2023   02:41:14   (  76.29, 134.74) 12/27/2023   02:42:12  (  76.29, 134.64)    2.52                58
 12/27/2023   03:32:00   ( -76.35, -58.18) 12/27/2023   03:33:15  ( -76.32, -58.02)    5.33                75
 12/27/2023   04:22:55   (  76.72, 107.68) 12/27/2023   04:24:01  (  76.71, 110.80)   79.98                66