Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 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)
 03/08/2020   22:55:10   (  70.56,-167.10) 03/08/2020   22:56:06  (  70.56,-167.03)    2.64                56
 03/08/2020   23:45:51   ( -70.42,   0.45) 03/08/2020   23:45:36  ( -70.44,   0.43)    2.65                15
 03/09/2020   00:36:22   (  69.66, 168.92) 03/09/2020   00:35:14  (  69.74, 167.08)   71.63                68
 03/11/2020   15:11:34   (  70.54, -51.16) 03/11/2020   15:12:34  (  70.55, -51.15)    1.65                60
 03/11/2020   16:02:16   ( -70.44, 116.31) 03/11/2020   16:02:04  ( -70.44, 116.31)    0.14                12
 03/11/2020   16:52:49   (  69.80, -75.38) 03/11/2020   16:51:40  (  69.84, -76.90)   58.47                69
 03/14/2020   07:27:59   (  70.57,  64.69) 03/14/2020   07:29:02  (  70.55,  64.72)    2.71                63
 03/14/2020   08:18:41   ( -70.47,-127.83) 03/14/2020   08:18:32  ( -70.44,-127.81)    3.43                 9
 03/14/2020   09:09:16   (  69.93,  40.32) 03/14/2020   09:08:05  (  70.00,  39.20)   43.06                71
 03/16/2020   23:44:22   (  70.55,-179.37) 03/16/2020   23:45:29  (  70.54,-179.42)    2.16                67
 03/17/2020   00:35:04   ( -70.45, -11.89) 03/17/2020   00:34:59  ( -70.44, -11.94)    2.33                 5
 03/17/2020   01:25:41   (  70.02, 156.09) 03/17/2020   01:24:30  (  70.10, 155.23)   33.96                71
 03/19/2020   16:00:47   (  70.59, -63.53) 03/19/2020   16:01:56  (  70.58, -63.47)    1.99                69
 03/19/2020   16:51:29   ( -70.48, 103.96) 03/19/2020   16:51:26  ( -70.48, 104.01)    1.68                 3
 03/19/2020   17:42:08   (  70.16, -88.22) 03/19/2020   17:40:56  (  70.20, -88.75)   20.45                72
 03/22/2020   08:17:12   (  70.62,  52.32) 03/22/2020   08:18:23  (  70.62,  52.47)    5.50                71
 03/22/2020   09:07:53   ( -70.46,-140.10) 03/22/2020   09:07:54  ( -70.47,-140.13)    1.61                 1
 03/22/2020   09:58:34   (  70.25,  27.54) 03/22/2020   09:57:22  (  70.30,  27.27)   11.62                72