Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 6 7.  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)
 06/08/2020   01:54:06   (  70.60, 148.30) 06/08/2020   01:54:59  (  70.58, 148.30)    1.95                53
 06/08/2020   02:44:47   ( -70.50, -44.21) 06/08/2020   02:44:29  ( -70.47, -44.23)    3.15                18
 06/08/2020   03:35:16   (  69.59, 124.48) 06/08/2020   03:34:09  (  69.66, 122.25)   86.29                67
 06/10/2020   18:10:29   (  70.58, -95.76) 06/10/2020   18:11:30  (  70.60, -95.80)    2.63                61
 06/10/2020   19:01:10   ( -70.47,  71.74) 06/10/2020   19:01:00  ( -70.49,  71.67)    3.40                10
 06/10/2020   19:51:45   (  69.89,-120.05) 06/10/2020   19:50:35  (  69.95,-121.47)   54.45                70
 06/13/2020   10:26:53   (  70.61,  20.10) 06/13/2020   10:28:01  (  70.62,  20.11)    0.85                68
 06/13/2020   11:17:34   ( -70.49,-172.39) 06/13/2020   11:17:31  ( -70.51,-172.42)    2.20                 3
 06/13/2020   12:08:13   (  70.13,  -4.51) 06/13/2020   12:07:02  (  70.19,  -5.25)   28.47                71
 06/16/2020   02:43:19   (  70.80, 135.70) 06/16/2020   02:44:30  (  70.70, 136.11)   18.51                71
 06/16/2020   03:33:57   ( -70.52, -56.52) 06/16/2020   03:34:01  ( -70.54, -56.50)    2.44                 4
 06/16/2020   04:24:41   (  70.43, 110.93) 06/16/2020   04:23:28  (  70.44, 110.99)    2.14                73
 06/18/2020   18:59:47   (  71.04,-108.80) 06/18/2020   19:00:57  (  70.96,-107.63)   43.46                70
 06/18/2020   19:50:21   ( -70.55,  59.34) 06/18/2020   19:50:33  ( -70.53,  59.35)    2.51                12
 06/18/2020   20:41:04   (  70.41,-133.13) 06/18/2020   20:40:00  (  70.42,-133.16)    1.52                64