Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2020 7 27.  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)
 07/29/2020   00:46:52   (  70.60, 165.26) 07/29/2020   00:47:22  (  70.57, 165.28)    3.45                30
 07/29/2020   01:37:33   ( -70.45, -27.19) 07/29/2020   01:36:52  ( -70.45, -27.26)    2.76                41
 07/31/2020   17:03:15   (  70.59, -78.82) 07/31/2020   17:03:51  (  70.60, -78.79)    1.86                36
 07/31/2020   17:53:57   ( -70.49,  88.66) 07/31/2020   17:53:21  ( -70.49,  88.68)    1.00                36
 08/03/2020   09:19:38   (  70.58,  37.11) 08/03/2020   09:20:21  (  70.58,  37.06)    1.61                43
 08/03/2020   10:10:20   ( -70.49,-155.42) 08/03/2020   10:09:51  ( -70.48,-155.46)    1.86                29
 08/06/2020   01:36:01   (  70.63, 152.95) 08/06/2020   01:36:49  (  70.61, 152.99)    2.45                48
 08/06/2020   02:26:43   ( -70.53, -39.58) 08/06/2020   02:26:19  ( -70.51, -39.53)    2.99                24
 08/08/2020   17:52:24   (  70.62, -91.13) 08/08/2020   17:53:18  (  70.64, -91.08)    2.69                54
 08/08/2020   18:43:06   ( -70.52,  76.34) 08/08/2020   18:42:48  ( -70.54,  76.40)    2.80                18