Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 15.  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   ( -75.85,  95.87) 12/26/2023   17:21:35  ( -75.86,  93.25)   71.23                68
 12/26/2023   18:13:37   (  76.19, -98.02) 12/26/2023   18:12:23  (  76.17, -98.36)    9.51                74
 12/26/2023   19:04:23   ( -76.25,  69.08) 12/26/2023   19:03:25  ( -76.24,  69.14)    1.78                58
 12/26/2023   19:55:09   (  76.23,-123.54) 12/26/2023   19:54:20  (  76.24,-123.60)    1.83                49
 12/26/2023   20:45:54   ( -76.24,  43.73) 12/26/2023   20:45:23  ( -76.26,  43.74)    2.47                31
 12/26/2023   21:36:41   (  76.27,-149.06) 12/26/2023   21:36:18  (  76.26,-149.00)    1.72                23
 12/26/2023   22:27:26   ( -76.28,  18.21) 12/26/2023   22:27:21  ( -76.29,  18.34)    3.54                 5
 12/26/2023   23:18:12   (  76.26,-174.41) 12/26/2023   23:18:16  (  76.28,-174.41)    2.35                 4
 12/27/2023   00:08:57   ( -76.27,  -7.14) 12/27/2023   00:09:20  ( -76.27,  -7.23)    2.25                23
 12/27/2023   00:59:44   (  76.30, 160.07) 12/27/2023   01:00:14  (  76.31, 160.19)    3.36                30
 12/27/2023   01:50:29   ( -76.31, -32.66) 12/27/2023   01:51:18  ( -76.29, -32.63)    2.47                49
 12/27/2023   02:41:15   (  76.29, 134.71) 12/27/2023   02:42:13  (  76.29, 134.62)    2.56                58
 12/27/2023   03:32:01   ( -76.35, -58.19) 12/27/2023   03:33:15  ( -76.36, -57.86)    8.60                74
 12/27/2023   04:22:56   (  76.73, 107.65) 12/27/2023   04:24:02  (  76.70, 110.78)   80.10                66