Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 6.  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)
 04/06/2023   18:22:27   ( -72.84,  84.91) 04/06/2023   18:23:14  ( -72.85,  84.82)    3.00                47
 04/06/2023   19:13:13   (  72.77,-107.65) 04/06/2023   19:12:41  (  72.77,-107.70)    2.06                32
 04/09/2023   09:49:39   (  72.89,  33.05) 04/09/2023   09:50:11  (  72.88,  33.12)    2.67                32
 04/09/2023   10:40:21   ( -72.78,-159.40) 04/09/2023   10:39:40  ( -72.81,-159.38)    3.30                41
 04/12/2023   01:16:46   ( -72.85, -18.61) 04/12/2023   01:17:11  ( -72.84, -18.71)    3.48                25
 04/12/2023   02:07:32   (  72.79, 148.82) 04/12/2023   02:06:37  (  72.79, 148.85)    1.33                55
 04/14/2023   15:53:23   ( -73.53, 120.80) 04/14/2023   15:54:30  ( -73.47, 123.17)   75.23                67
 04/14/2023   16:43:57   (  72.88, -70.43) 04/14/2023   16:44:07  (  72.84, -70.44)    3.69                10
 04/14/2023   17:34:38   ( -72.76,  97.14) 04/14/2023   17:33:35  ( -72.78,  97.07)    3.17                63
 04/17/2023   07:20:22   (  73.03,  70.18) 04/17/2023   07:21:34  (  72.97,  70.42)   10.26                72
 04/17/2023   08:11:03   ( -72.85,-122.13) 04/17/2023   08:11:04  ( -72.85,-122.17)    1.24                 1
 04/17/2023   09:01:45   (  72.60,  45.71) 04/17/2023   09:00:33  (  72.65,  45.08)   21.42                72
 04/19/2023   22:47:28   ( -72.96,  18.58) 04/19/2023   22:48:32  ( -72.95,  18.64)    2.34                64
 04/19/2023   23:38:13   (  72.87,-173.91) 04/19/2023   23:37:59  (  72.85,-173.91)    2.10                14