Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 3 13.  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   (  70.56,  64.71) 03/14/2020   07:29:01  (  70.54,  64.71)    1.80                63
 03/14/2020   08:18:40   ( -70.46,-127.82) 03/14/2020   08:18:30  ( -70.48,-127.75)    3.50                10
 03/14/2020   09:09:15   (  69.92,  40.33) 03/14/2020   09:08:04  (  70.00,  39.20)   44.00                71
 03/16/2020   23:44:22   (  70.54,-179.35) 03/16/2020   23:45:29  (  70.53,-179.43)    3.07                67
 03/17/2020   00:35:05   ( -70.49, -11.95) 03/17/2020   00:34:58  ( -70.47, -11.88)    3.09                 7
 03/17/2020   01:25:41   (  70.00, 156.11) 03/17/2020   01:24:30  (  70.09, 155.21)   35.51                71
 03/19/2020   16:00:47   (  70.57, -63.49) 03/19/2020   16:01:56  (  70.57, -63.50)    0.46                69
 03/19/2020   16:51:29   ( -70.46, 103.99) 03/19/2020   16:51:26  ( -70.46, 103.98)    0.50                 3
 03/19/2020   17:42:08   (  70.14, -88.19) 03/19/2020   17:40:56  (  70.19, -88.77)   22.65                72
 03/22/2020   08:17:12   (  70.59,  52.36) 03/22/2020   08:18:23  (  70.60,  52.44)    2.84                71
 03/22/2020   09:07:54   ( -70.49,-140.15) 03/22/2020   09:07:53  ( -70.50,-140.08)    2.74                 1
 03/22/2020   09:58:34   (  70.22,  27.59) 03/22/2020   09:57:22  (  70.28,  27.23)   14.61                72
 03/25/2020   00:33:37   (  70.68, 168.14) 03/25/2020   00:34:49  (  70.63, 168.36)    9.50                72
 03/25/2020   01:24:17   ( -70.46, -24.20) 03/25/2020   01:24:20  ( -70.48, -24.24)    2.42                 3
 03/25/2020   02:15:00   (  70.36, 143.28) 03/25/2020   02:13:47  (  70.36, 143.24)    1.70                73