Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 12 27.  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)
 12/27/2022   12:12:01   ( -72.90, 176.19) 12/27/2022   12:13:11  ( -72.79, 177.47)   43.55                70
 12/27/2022   13:02:39   (  72.44, -15.56) 12/27/2022   13:02:43  (  72.44, -15.55)    0.67                 4
 12/27/2022   13:53:22   ( -72.35, 151.93) 12/27/2022   13:52:12  ( -72.37, 151.96)    2.15                70
 12/30/2022   03:39:12   (  72.51, 125.19) 12/30/2022   03:40:17  (  72.52, 125.20)    0.84                65
 12/30/2022   04:29:55   ( -72.42, -67.30) 12/30/2022   04:29:47  ( -72.41, -67.38)    3.01                 8
 12/30/2022   05:20:31   (  71.86, 101.09) 12/30/2022   05:19:22  (  71.88,  99.33)   60.82                69
 01/01/2023   19:06:30   ( -72.54,  73.35) 01/01/2023   19:07:21  ( -72.53,  73.44)    3.43                51
 01/01/2023   19:57:15   (  72.45,-119.17) 01/01/2023   19:56:48  (  72.43,-119.09)    3.43                27
 01/04/2023   10:33:48   (  72.48,  21.67) 01/04/2023   10:34:23  (  72.48,  21.59)    2.56                35
 01/04/2023   11:24:32   ( -72.43,-170.91) 01/04/2023   11:23:52  ( -72.42,-170.88)    1.19                40
 01/07/2023   02:01:06   ( -72.51, -30.17) 01/07/2023   02:01:26  ( -72.50, -30.12)    1.77                20
 01/07/2023   02:51:50   (  72.38, 137.39) 01/07/2023   02:50:53  (  72.40, 137.33)    3.06                57
 01/09/2023   16:37:46   ( -72.89, 109.91) 01/09/2023   16:38:56  ( -72.78, 111.00)   38.00                70
 01/09/2023   17:28:24   (  72.47, -81.90) 01/09/2023   17:28:27  (  72.46, -81.95)    1.89                 3