Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 26.  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   ( -75.87,  95.81) 12/26/2023   17:21:35  ( -75.85,  93.19)   71.20                68
 12/26/2023   18:13:37   (  76.20, -98.06) 12/26/2023   18:12:23  (  76.16, -98.40)   10.33                74
 12/26/2023   19:04:22   ( -76.22,  69.18) 12/26/2023   19:03:25  ( -76.22,  69.07)    2.75                57
 12/26/2023   19:55:09   (  76.24,-123.58) 12/26/2023   19:54:20  (  76.23,-123.64)    2.28                49
 12/26/2023   20:45:54   ( -76.26,  43.66) 12/26/2023   20:45:23  ( -76.25,  43.67)    1.70                31
 12/26/2023   21:36:40   (  76.23,-148.93) 12/26/2023   21:36:18  (  76.25,-149.05)    3.49                22
 12/26/2023   22:27:25   ( -76.26,  18.30) 12/26/2023   22:27:21  ( -76.27,  18.27)    1.81                 4
 12/26/2023   23:18:12   (  76.27,-174.46) 12/26/2023   23:18:16  (  76.27,-174.45)    0.10                 4
 12/27/2023   00:08:57   ( -76.29,  -7.22) 12/27/2023   00:09:19  ( -76.29,  -7.14)    2.29                22
 12/27/2023   00:59:43   (  76.27, 160.19) 12/27/2023   01:00:14  (  76.30, 160.14)    3.35                31
 12/27/2023   01:50:28   ( -76.29, -32.58) 12/27/2023   01:51:17  ( -76.32, -32.54)    3.32                49
 12/27/2023   02:41:15   (  76.31, 134.66) 12/27/2023   02:42:12  (  76.32, 134.74)    2.39                57
 12/27/2023   03:32:01   ( -76.37, -58.27) 12/27/2023   03:33:15  ( -76.34, -57.94)    9.29                74
 12/27/2023   04:22:56   (  76.74, 107.60) 12/27/2023   04:24:02  (  76.69, 110.73)   80.17                66