Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 14.  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)
 03/14/2020   07:27:58   (  70.52,  64.77) 03/14/2020   07:29:02  (  70.53,  64.69)    3.14                64
 03/14/2020   08:18:41   ( -70.48,-127.84) 03/14/2020   08:18:31  ( -70.47,-127.77)    2.99                10
 03/14/2020   09:09:16   (  69.94,  40.31) 03/14/2020   09:08:05  (  69.98,  39.18)   43.41                71
 03/16/2020   23:44:22   (  70.55,-179.38) 03/16/2020   23:45:28  (  70.57,-179.37)    2.15                66
 03/17/2020   00:35:04   ( -70.45, -11.90) 03/17/2020   00:34:58  ( -70.46, -11.90)    0.76                 6
 03/17/2020   01:25:41   (  70.02, 156.08) 03/17/2020   01:24:30  (  70.08, 155.19)   34.47                71
 03/19/2020   16:00:47   (  70.59, -63.53) 03/19/2020   16:01:56  (  70.55, -63.52)    3.43                69
 03/19/2020   16:51:29   ( -70.48, 103.96) 03/19/2020   16:51:25  ( -70.50, 104.04)    3.63                 4
 03/19/2020   17:42:08   (  70.16, -88.22) 03/19/2020   17:40:55  (  70.23, -88.72)   20.11                73
 03/22/2020   08:17:12   (  70.62,  52.33) 03/22/2020   08:18:23  (  70.59,  52.41)    4.69                71
 03/22/2020   09:07:53   ( -70.46,-140.10) 03/22/2020   09:07:53  ( -70.48,-140.11)    2.61                 0
 03/22/2020   09:58:34   (  70.25,  27.55) 03/22/2020   09:57:21  (  70.32,  27.29)   12.41                73
 03/25/2020   00:33:38   (  70.71, 168.09) 03/25/2020   00:34:49  (  70.67, 168.42)   12.70                71
 03/25/2020   01:24:18   ( -70.49, -24.25) 03/25/2020   01:24:21  ( -70.46, -24.26)    3.40                 3
 03/25/2020   02:15:00   (  70.33, 143.32) 03/25/2020   02:13:48  (  70.35, 143.21)    4.05                72
 03/27/2020   16:50:03   (  70.79, -76.15) 03/27/2020   16:51:15  (  70.70, -75.66)   20.83                72
 03/27/2020   17:40:41   ( -70.47,  91.68) 03/27/2020   17:40:47  ( -70.49,  91.66)    2.06                 6
 03/27/2020   18:31:24   (  70.37,-100.84) 03/27/2020   18:30:14  (  70.37,-100.87)    1.24                70