Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 10.  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)
 03/11/2020   15:11:34   (  70.54, -51.16) 03/11/2020   15:12:34  (  70.55, -51.16)    1.63                60
 03/11/2020   16:02:16   ( -70.44, 116.31) 03/11/2020   16:02:04  ( -70.44, 116.31)    0.59                12
 03/11/2020   16:52:49   (  69.80, -75.38) 03/11/2020   16:51:40  (  69.84, -76.90)   58.49                69
 03/14/2020   07:27:59   (  70.57,  64.69) 03/14/2020   07:29:02  (  70.55,  64.71)    2.87                63
 03/14/2020   08:18:40   ( -70.42,-127.75) 03/14/2020   08:18:32  ( -70.44,-127.82)    3.13                 8
 03/14/2020   09:09:16   (  69.93,  40.31) 03/14/2020   09:08:05  (  70.00,  39.20)   43.03                71
 03/16/2020   23:44:22   (  70.55,-179.38) 03/16/2020   23:45:29  (  70.54,-179.42)    2.39                67
 03/17/2020   00:35:04   ( -70.45, -11.89) 03/17/2020   00:34:59  ( -70.43, -11.94)    2.82                 5
 03/17/2020   01:25:41   (  70.02, 156.09) 03/17/2020   01:24:30  (  70.10, 155.22)   33.84                71
 03/19/2020   16:00:47   (  70.59, -63.53) 03/19/2020   16:01:56  (  70.58, -63.48)    2.25                69
 03/19/2020   16:51:29   ( -70.48, 103.96) 03/19/2020   16:51:26  ( -70.48, 104.00)    1.80                 3
 03/19/2020   17:42:08   (  70.17, -88.23) 03/19/2020   17:40:56  (  70.20, -88.76)   20.27                72
 03/22/2020   08:17:12   (  70.63,  52.31) 03/22/2020   08:18:23  (  70.62,  52.46)    5.67                71
 03/22/2020   09:07:53   ( -70.47,-140.11) 03/22/2020   09:07:54  ( -70.47,-140.13)    0.82                 1
 03/22/2020   09:58:34   (  70.26,  27.53) 03/22/2020   09:57:22  (  70.30,  27.26)   11.15                72