Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 16.  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)
 06/16/2020   02:43:17   (  70.68, 135.90) 06/16/2020   02:44:29  (  70.64, 136.02)    6.82                72
 06/16/2020   03:33:57   ( -70.52, -56.51) 06/16/2020   03:33:59  ( -70.52, -56.52)    0.72                 2
 06/16/2020   04:24:40   (  70.36, 111.04) 06/16/2020   04:23:27  (  70.37, 110.90)    5.11                73
 06/18/2020   18:59:45   (  70.93,-108.60) 06/18/2020   19:00:56  (  70.83,-107.80)   30.68                71
 06/18/2020   19:50:21   ( -70.54,  59.35) 06/18/2020   19:50:29  ( -70.56,  59.41)    2.74                 8
 06/18/2020   20:41:04   (  70.40,-133.10) 06/18/2020   20:39:57  (  70.40,-133.17)    2.56                67
 06/21/2020   11:16:13   (  71.17,   6.90) 06/21/2020   11:17:22  (  71.08,   8.46)   57.02                69
 06/21/2020   12:06:44   ( -70.52, 175.30) 06/21/2020   12:07:00  ( -70.54, 175.26)    2.48                16
 06/21/2020   12:57:28   (  70.43, -17.25) 06/21/2020   12:56:27  (  70.43, -17.25)    0.16                61
 06/24/2020   03:32:41   (  71.41, 122.39) 06/24/2020   03:33:48  (  71.32, 124.73)   83.91                67
 06/24/2020   04:23:08   ( -70.55, -68.83) 06/24/2020   04:23:30  ( -70.56, -68.82)    1.84                22
 06/24/2020   05:13:51   (  70.47,  98.60) 06/24/2020   05:12:56  (  70.46,  98.67)    2.66                55
 06/26/2020   20:39:31   ( -70.58,  47.03) 06/26/2020   20:39:59  ( -70.59,  47.10)    2.83                28
 06/26/2020   21:30:14   (  70.45,-145.46) 06/26/2020   21:29:27  (  70.43,-145.50)    3.35                47
 06/29/2020   12:55:54   ( -70.56, 162.97) 06/29/2020   12:56:30  ( -70.56, 162.93)    1.62                36
 06/29/2020   13:46:37   (  70.44, -29.53) 06/29/2020   13:45:57  (  70.45, -29.59)    2.54                40