Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 8 20.  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)
 08/20/2022   04:05:13   (  72.05, 118.22) 08/20/2022   04:05:16  (  72.06, 118.22)    1.35                 3
 08/20/2022   04:55:56   ( -71.97, -74.31) 08/20/2022   04:54:45  ( -72.00, -74.27)    2.93                71
 08/22/2022   18:41:37   (  72.39,-101.49) 08/22/2022   18:42:48  (  72.28,-100.78)   26.67                71
 08/22/2022   19:32:15   ( -72.05,  66.50) 08/22/2022   19:32:20  ( -72.06,  66.45)    1.94                 5
 08/22/2022   20:23:00   (  71.97,-126.04) 08/22/2022   20:21:47  (  71.97,-126.07)    1.06                73
 08/25/2022   10:08:40   ( -72.43,-153.31) 08/25/2022   10:09:51  ( -72.32,-152.47)   30.65                71
 08/25/2022   10:59:19   (  72.05,  14.75) 08/25/2022   10:59:21  (  72.07,  14.71)    2.12                 2
 08/25/2022   11:50:02   ( -71.96,-177.76) 08/25/2022   11:48:51  ( -71.95,-177.85)    3.31                71
 08/28/2022   01:35:42   (  72.35, 155.12) 08/28/2022   01:36:53  (  72.27, 155.67)   20.64                71
 08/28/2022   02:26:22   ( -72.09, -37.06) 08/28/2022   02:26:24  ( -72.10, -36.99)    2.72                 2
 08/28/2022   03:17:05   (  71.92, 130.57) 08/28/2022   03:15:52  (  71.95, 130.39)    6.99                73
 08/30/2022   17:02:44   ( -72.38, 103.32) 08/30/2022   17:03:55  ( -72.29, 103.96)   23.79                71
 08/30/2022   17:53:24   (  72.07, -88.75) 08/30/2022   17:53:24  (  72.08, -88.77)    1.93                 0
 08/30/2022   18:44:07   ( -71.96,  78.77) 08/30/2022   18:42:54  ( -71.98,  78.67)    3.66                73
 09/02/2022   08:29:45   (  72.27,  51.81) 09/02/2022   08:30:57  (  72.21,  52.06)   10.59                72
 09/02/2022   09:20:27   ( -72.10,-140.55) 09/02/2022   09:20:27  ( -72.10,-140.50)    1.79                 0
 09/02/2022   10:11:08   (  71.84,  27.25) 09/02/2022   10:09:56  (  71.89,  26.77)   17.37                72