Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 2 26.  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)
 02/28/2021   12:30:54   ( -70.94, 169.59) 02/28/2021   12:31:53  ( -70.94, 169.62)    1.27                59
 02/28/2021   13:21:38   (  70.86, -22.96) 02/28/2021   13:21:20  (  70.85, -22.88)    3.68                18
 02/28/2021   14:12:08   ( -70.16, 145.49) 02/28/2021   14:10:59  ( -70.24, 143.85)   62.37                69
 03/03/2021   04:47:14   ( -70.92, -74.44) 03/03/2021   04:48:21  ( -70.93, -74.51)    2.66                67
 03/03/2021   05:37:58   (  70.85,  92.99) 03/03/2021   05:37:48  (  70.83,  92.98)    2.09                10
 03/03/2021   06:28:34   ( -70.46, -99.04) 03/03/2021   06:27:22  ( -70.50, -99.89)   31.81                72
 03/05/2021   21:03:35   ( -71.01,  41.34) 03/05/2021   21:04:47  ( -70.97,  41.43)    5.33                72
 03/05/2021   21:54:18   (  70.89,-151.14) 03/05/2021   21:54:14  (  70.87,-151.09)    3.35                 4
 03/05/2021   22:44:58   ( -70.70,  16.49) 03/05/2021   22:43:45  ( -70.70,  16.29)    7.39                73
 03/08/2021   13:20:00   ( -71.25, 156.86) 03/08/2021   13:21:11  ( -71.16, 157.62)   28.91                71
 03/08/2021   14:10:38   (  70.88, -35.20) 03/08/2021   14:10:41  (  70.90, -35.16)    2.12                 3
 03/08/2021   15:01:20   ( -70.79, 132.28) 03/08/2021   15:00:11  ( -70.79, 132.31)    0.98                69
 03/11/2021   05:36:25   ( -71.50, -87.65) 03/11/2021   05:37:34  ( -71.41, -86.11)   55.24                69
 03/11/2021   06:26:58   (  70.87,  80.75) 03/11/2021   06:27:09  (  70.87,  80.67)    2.88                11
 03/11/2021   07:17:41   ( -70.82,-111.85) 03/11/2021   07:16:38  ( -70.81,-111.77)    3.23                63