Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 8 17.  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)
 08/19/2020   10:58:03   (  71.08,  11.77) 08/19/2020   10:59:13  (  70.95,  12.90)   43.17                70
 08/19/2020   11:48:37   ( -70.59, 179.91) 08/19/2020   11:48:48  ( -70.57, 179.95)    2.37                11
 08/19/2020   12:39:20   (  70.45, -12.56) 08/19/2020   12:38:15  (  70.47, -12.56)    2.17                65
 08/22/2020   03:14:32   (  71.39, 127.13) 08/22/2020   03:15:39  (  71.27, 129.27)   77.41                67
 08/22/2020   04:05:00   ( -70.59, -64.19) 08/22/2020   04:05:20  ( -70.57, -64.18)    2.49                20
 08/22/2020   04:55:43   (  70.45, 103.35) 08/22/2020   04:54:47  (  70.46, 103.30)    2.01                56
 08/24/2020   20:21:23   ( -70.60,  51.72) 08/24/2020   20:21:52  ( -70.59,  51.73)    0.42                29
 08/24/2020   21:12:07   (  70.51,-140.83) 08/24/2020   21:11:19  (  70.48,-140.80)    3.05                48
 08/27/2020   12:37:46   ( -70.60, 167.62) 08/27/2020   12:38:25  ( -70.59, 167.59)    1.41                39
 08/27/2020   13:28:30   (  70.51, -24.93) 08/27/2020   13:27:52  (  70.48, -24.93)    3.67                38
 08/30/2020   04:54:08   ( -70.61, -76.48) 08/30/2020   04:54:57  ( -70.62, -76.50)    1.56                49
 08/30/2020   05:44:52   (  70.52,  90.98) 08/30/2020   05:44:24  (  70.51,  90.97)    1.42                28