Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 30.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 12/30/2022   03:39:13   (  72.53, 125.17) 12/30/2022   03:40:18  (  72.51, 125.18)    1.88                65
 12/30/2022   04:29:56   ( -72.43, -67.33) 12/30/2022   04:29:47  ( -72.44, -67.31)    1.36                 9
 12/30/2022   05:20:31   (  71.83, 101.16) 12/30/2022   05:19:23  (  71.87,  99.31)   64.26                68
 01/01/2023   19:06:29   ( -72.50,  73.42) 01/01/2023   19:07:21  ( -72.51,  73.41)    1.08                52
 01/01/2023   19:57:14   (  72.41,-119.09) 01/01/2023   19:56:48  (  72.42,-119.11)    0.99                26
 01/04/2023   10:33:48   (  72.50,  21.64) 01/04/2023   10:34:22  (  72.52,  21.67)    2.96                34
 01/04/2023   11:24:31   ( -72.39,-170.84) 01/04/2023   11:23:52  ( -72.41,-170.90)    2.95                39
 01/07/2023   02:01:05   ( -72.47, -30.10) 01/07/2023   02:01:26  ( -72.49, -30.15)    2.73                21
 01/07/2023   02:51:50   (  72.39, 137.36) 01/07/2023   02:50:53  (  72.39, 137.32)    1.51                57
 01/09/2023   16:37:45   ( -72.86, 109.98) 01/09/2023   16:38:56  ( -72.77, 110.98)   34.31                71
 01/09/2023   17:28:24   (  72.49, -81.93) 01/09/2023   17:28:26  (  72.51, -81.87)    3.37                 2
 01/09/2023   18:19:08   ( -72.42,  85.51) 01/09/2023   18:17:56  ( -72.40,  85.57)    2.75                72
 01/12/2023   08:04:57   (  72.53,  58.87) 01/12/2023   08:06:00  (  72.56,  58.82)    2.91                63
 01/12/2023   08:55:41   ( -72.46,-133.67) 01/12/2023   08:55:30  ( -72.45,-133.74)    2.64                11