Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 17.  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,  95.90) 12/26/2023   17:21:36  ( -75.83,  93.14)   75.05                67
 12/26/2023   18:13:37   (  76.18, -97.99) 12/26/2023   18:12:23  (  76.18, -98.32)    8.61                74
 12/26/2023   19:04:23   ( -76.24,  69.11) 12/26/2023   19:03:25  ( -76.25,  69.19)    2.38                58
 12/26/2023   19:55:09   (  76.22,-123.51) 12/26/2023   19:54:20  (  76.25,-123.55)    3.31                49
 12/26/2023   20:45:54   ( -76.24,  43.75) 12/26/2023   20:45:24  ( -76.23,  43.62)    3.51                30
 12/26/2023   21:36:41   (  76.26,-149.03) 12/26/2023   21:36:18  (  76.27,-148.95)    2.47                23
 12/26/2023   22:27:26   ( -76.27,  18.23) 12/26/2023   22:27:22  ( -76.26,  18.22)    2.01                 4
 12/26/2023   23:18:12   (  76.25,-174.39) 12/26/2023   23:18:17  (  76.25,-174.52)    3.65                 5
 12/27/2023   00:08:57   ( -76.27,  -7.12) 12/27/2023   00:09:20  ( -76.28,  -7.18)    2.08                23
 12/27/2023   00:59:44   (  76.29, 160.09) 12/27/2023   01:00:15  (  76.28, 160.07)    1.95                31
 12/27/2023   01:50:29   ( -76.31, -32.64) 12/27/2023   01:51:18  ( -76.30, -32.58)    1.61                49
 12/27/2023   02:41:15   (  76.29, 134.74) 12/27/2023   02:42:13  (  76.30, 134.67)    2.24                58
 12/27/2023   03:32:02   ( -76.39, -58.33) 12/27/2023   03:33:16  ( -76.33, -57.98)   11.36                74
 12/27/2023   04:22:56   (  76.72, 107.68) 12/27/2023   04:24:02  (  76.71, 110.83)   80.67                66