Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 2 15.  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)
 02/15/2023   15:17:54   ( -72.65, 130.80) 02/15/2023   15:18:29  ( -72.65, 130.80)    0.05                35
 02/15/2023   16:08:39   (  72.58, -61.74) 02/15/2023   16:07:56  (  72.57, -61.72)    1.33                43
 02/18/2023   06:45:09   (  72.64,  79.05) 02/18/2023   06:45:28  (  72.64,  79.03)    0.91                19
 02/18/2023   07:35:53   ( -72.58,-113.52) 02/18/2023   07:34:57  ( -72.57,-113.47)    1.98                56
 02/20/2023   21:21:45   (  73.01,-140.84) 02/20/2023   21:22:56  (  72.89,-139.89)   33.91                71
 02/20/2023   22:12:23   ( -72.66,  27.24) 02/20/2023   22:12:28  ( -72.66,  27.31)    2.23                 5
 02/20/2023   23:03:08   (  72.58,-165.30) 02/20/2023   23:01:55  (  72.57,-165.22)    2.79                73
 02/23/2023   12:48:51   ( -72.70, 168.07) 02/23/2023   12:49:58  ( -72.71, 168.00)    2.56                67
 02/23/2023   13:39:36   (  72.62, -24.46) 02/23/2023   13:39:25  (  72.61, -24.53)    2.55                11
 02/23/2023   14:30:11   ( -72.11, 143.88) 02/23/2023   14:29:01  ( -72.17, 142.30)   54.41                70
 02/26/2023   04:16:06   (  72.72, 116.24) 02/26/2023   04:16:54  (  72.72, 116.29)    1.69                48
 02/26/2023   05:06:49   ( -72.62, -76.23) 02/26/2023   05:06:24  ( -72.60, -76.30)    3.36                25
 02/28/2023   19:43:18   ( -72.69,  64.55) 02/28/2023   19:43:52  ( -72.72,  64.54)    3.14                34
 02/28/2023   20:34:03   (  72.61,-127.98) 02/28/2023   20:33:19  (  72.62,-128.00)    0.99                44