Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 1 8.  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)
 01/10/2020   00:03:24   ( -70.48,  -4.10) 01/10/2020   00:04:26  ( -70.46,  -4.13)    2.17                62
 01/10/2020   00:54:08   (  70.36, 163.40) 01/10/2020   00:53:53  (  70.36, 163.36)    1.44                15
 01/10/2020   01:44:40   ( -69.79, -28.41) 01/10/2020   01:43:30  ( -69.86, -29.70)   50.32                70
 01/12/2020   16:19:48   ( -70.48, 111.80) 01/12/2020   16:20:54  ( -70.48, 111.78)    1.10                66
 01/12/2020   17:10:32   (  70.36, -80.70) 01/12/2020   17:10:21  (  70.37, -80.74)    2.13                11
 01/12/2020   18:01:07   ( -69.95,  87.26) 01/12/2020   17:59:56  ( -69.99,  86.35)   34.89                71
 01/15/2020   08:36:14   ( -70.53,-132.38) 01/15/2020   08:37:23  ( -70.51,-132.30)    3.27                69
 01/15/2020   09:26:58   (  70.41,  35.12) 01/15/2020   09:26:50  (  70.40,  35.18)    2.60                 8
 01/15/2020   10:17:35   ( -70.10,-157.08) 01/15/2020   10:16:22  ( -70.19,-157.49)   18.41                73
 01/18/2020   00:52:40   ( -70.58, -16.56) 01/18/2020   00:53:52  ( -70.56, -16.36)    7.84                72
 01/18/2020   01:43:23   (  70.41, 151.01) 01/18/2020   01:43:20  (  70.39, 151.04)    2.70                 3
 01/18/2020   02:34:03   ( -70.26, -41.42) 01/18/2020   02:32:50  ( -70.29, -41.47)    3.98                73
 01/20/2020   17:09:09   ( -70.79,  99.00) 01/20/2020   17:10:20  ( -70.67,  99.68)   28.43                71
 01/20/2020   17:59:48   (  70.42, -93.09) 01/20/2020   17:59:50  (  70.39, -93.08)    2.66                 2
 01/20/2020   18:50:29   ( -70.31,  74.39) 01/20/2020   18:49:20  ( -70.29,  74.41)    1.96                69