Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 3 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)
 03/06/2022   15:29:32   (  72.43, -55.04) 03/06/2022   15:30:39  (  72.36, -52.82)   75.17                67
 03/06/2022   16:20:02   ( -71.72, 113.66) 03/06/2022   16:20:19  ( -71.71, 113.67)    1.29                17
 03/06/2022   17:10:47   (  71.59, -78.80) 03/06/2022   17:09:46  (  71.61, -78.85)    3.22                61
 03/09/2022   06:56:36   ( -72.28,-106.50) 03/09/2022   06:57:45  ( -72.19,-104.89)   55.69                69
 03/09/2022   07:47:12   (  71.70,  61.92) 03/09/2022   07:47:19  (  71.72,  61.93)    2.53                 7
 03/09/2022   08:37:54   ( -71.60,-130.58) 03/09/2022   08:36:49  ( -71.60,-130.63)    1.94                65
 03/11/2022   22:23:40   (  71.96,-157.65) 03/11/2022   22:24:51  (  71.87,-157.22)   18.51                71
 03/11/2022   23:14:19   ( -71.71,  10.15) 03/11/2022   23:14:22  ( -71.70,  10.13)    0.90                 3
 03/12/2022   00:05:03   (  71.53, 177.78) 03/12/2022   00:03:50  (  71.55, 177.52)    9.23                73
 03/14/2022   13:50:43   ( -71.77, 150.96) 03/14/2022   13:51:55  ( -71.78, 150.88)    3.30                72
 03/14/2022   14:41:29   (  71.69, -41.60) 03/14/2022   14:41:22  (  71.68, -41.66)    2.64                 7
 03/14/2022   15:32:07   ( -71.39, 126.28) 03/14/2022   15:30:55  ( -71.41, 125.53)   26.65                72
 03/17/2022   05:17:53   (  71.81,  99.11) 03/17/2022   05:18:53  (  71.80,  99.15)    2.14                60
 03/17/2022   06:08:35   ( -71.71, -93.38) 03/17/2022   06:08:23  ( -71.69, -93.40)    1.76                12
 03/17/2022   06:59:08   (  70.96,  75.25) 03/17/2022   06:58:00  (  71.04,  73.19)   75.01                68
 03/19/2022   20:45:00   ( -71.82,  47.33) 03/19/2022   20:45:55  ( -71.80,  47.39)    3.20                55
 03/19/2022   21:35:45   (  71.70,-145.14) 03/19/2022   21:35:22  (  71.69,-145.15)    1.58                23