Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 1.  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)
 04/01/2023   11:28:09   ( -72.87,-171.65) 04/01/2023   11:29:16  ( -72.86,-171.65)    0.96                67
 04/01/2023   12:18:54   (  72.76,  -4.10) 04/01/2023   12:18:43  (  72.78,  -4.17)    3.30                11
 04/01/2023   13:09:29   ( -72.29, 164.17) 04/01/2023   13:08:19  ( -72.33, 162.64)   52.12                70
 04/04/2023   02:55:19   (  72.85, 136.64) 04/04/2023   02:56:14  (  72.84, 136.55)    3.34                55
 04/04/2023   03:46:02   ( -72.78, -55.91) 04/04/2023   03:45:43  ( -72.77, -55.95)    2.47                19
 04/06/2023   18:22:28   ( -72.89,  84.81) 04/06/2023   18:23:13  ( -72.89,  84.90)    3.01                45
 04/06/2023   19:13:13   (  72.78,-107.66) 04/06/2023   19:12:40  (  72.80,-107.64)    2.03                33
 04/09/2023   09:49:38   (  72.85,  33.13) 04/09/2023   09:50:10  (  72.87,  33.12)    2.76                32
 04/09/2023   10:40:21   ( -72.78,-159.41) 04/09/2023   10:39:40  ( -72.76,-159.47)    3.23                41
 04/12/2023   01:16:46   ( -72.86, -18.64) 04/12/2023   01:17:09  ( -72.85, -18.68)    1.99                23
 04/12/2023   02:07:32   (  72.81, 148.77) 04/12/2023   02:06:35  (  72.80, 148.87)    3.55                57
 04/14/2023   15:53:20   ( -73.45, 120.98) 04/14/2023   15:54:28  ( -73.37, 122.98)   64.35                68
 04/14/2023   16:43:55   (  72.86, -70.39) 04/14/2023   16:44:03  (  72.84, -70.42)    2.07                 8
 04/14/2023   17:34:38   ( -72.78,  97.09) 04/14/2023   17:33:32  ( -72.78,  97.10)    0.34                66