Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 1 25.  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)
 01/26/2022   01:23:35   ( -71.63, -22.36) 01/26/2022   01:24:22  ( -71.60, -22.42)    3.38                47
 01/26/2022   02:14:19   (  71.51, 145.16) 01/26/2022   02:13:49  (  71.51, 145.07)    3.20                30
 01/28/2022   16:50:45   (  71.62, -74.13) 01/28/2022   16:51:22  (  71.60, -74.18)    3.00                37
 01/28/2022   17:41:29   ( -71.56,  93.30) 01/28/2022   17:40:51  ( -71.54,  93.35)    3.06                38
 01/31/2022   08:17:54   ( -71.63,-125.90) 01/31/2022   08:18:24  ( -71.62,-125.91)    0.58                30
 01/31/2022   09:08:38   (  71.51,  41.62) 01/31/2022   09:07:51  (  71.53,  41.58)    2.39                47
 02/02/2022   23:45:03   (  71.63,-177.67) 02/02/2022   23:45:23  (  71.60,-177.69)    3.01                20
 02/03/2022   00:35:46   ( -71.52, -10.16) 02/03/2022   00:34:52  ( -71.54, -10.16)    2.92                54
 02/05/2022   14:21:39   (  72.26, -37.96) 02/05/2022   14:22:47  (  72.16, -36.13)   63.43                68
 02/05/2022   15:12:12   ( -71.64, 130.54) 02/05/2022   15:12:25  ( -71.62, 130.57)    2.87                13
 02/05/2022   16:02:56   (  71.52, -61.94) 02/05/2022   16:01:52  (  71.51, -61.95)    1.00                64