Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 20.  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   ( -75.86,  95.85) 12/26/2023   17:21:35  ( -75.86,  93.24)   70.71                68
 12/26/2023   18:13:37   (  76.20, -98.03) 12/26/2023   18:12:23  (  76.17, -98.36)    9.19                74
 12/26/2023   19:04:23   ( -76.26,  69.05) 12/26/2023   19:03:25  ( -76.24,  69.13)    2.97                58
 12/26/2023   19:55:09   (  76.23,-123.56) 12/26/2023   19:54:20  (  76.24,-123.60)    1.25                49
 12/26/2023   20:45:54   ( -76.25,  43.70) 12/26/2023   20:45:23  ( -76.26,  43.73)    1.42                31
 12/26/2023   21:36:41   (  76.27,-149.08) 12/26/2023   21:36:18  (  76.26,-149.00)    2.39                23
 12/26/2023   22:27:26   ( -76.29,  18.18) 12/26/2023   22:27:21  ( -76.29,  18.33)    4.01                 5
 12/26/2023   23:18:12   (  76.27,-174.43) 12/26/2023   23:18:16  (  76.28,-174.41)    1.90                 4
 12/27/2023   00:08:57   ( -76.28,  -7.18) 12/27/2023   00:09:20  ( -76.27,  -7.24)    2.63                23
 12/27/2023   00:59:44   (  76.31, 160.04) 12/27/2023   01:00:14  (  76.31, 160.19)    3.80                30
 12/27/2023   01:50:28   ( -76.28, -32.54) 12/27/2023   01:51:18  ( -76.29, -32.64)    3.04                50
 12/27/2023   02:41:15   (  76.30, 134.69) 12/27/2023   02:42:13  (  76.29, 134.62)    2.48                58
 12/27/2023   03:32:01   ( -76.36, -58.22) 12/27/2023   03:33:15  ( -76.36, -57.88)    9.14                74
 12/27/2023   04:22:56   (  76.74, 107.62) 12/27/2023   04:24:02  (  76.70, 110.78)   80.66                66