Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 6 13.  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)
 06/14/2023   10:26:33   ( -73.04,-155.60) 06/14/2023   10:27:05  ( -73.05,-155.68)    3.01                32
 06/14/2023   11:17:18   (  72.97,  11.85) 06/14/2023   11:16:32  (  72.97,  11.80)    1.77                46
 06/17/2023   01:53:43   (  73.05, 152.63) 06/17/2023   01:54:06  (  73.06, 152.58)    2.04                23
 06/17/2023   02:44:27   ( -72.98, -39.92) 06/17/2023   02:43:35  ( -72.99, -39.91)    0.82                52
 06/19/2023   16:30:24   (  73.87, -68.35) 06/19/2023   16:31:29  (  73.76, -65.35)   93.85                65
 06/19/2023   17:20:53   ( -73.06, 100.84) 06/19/2023   17:21:10  ( -73.06, 100.83)    0.20                17
 06/19/2023   18:11:38   (  73.00, -91.71) 06/19/2023   18:10:37  (  72.97, -91.70)    2.92                61
 06/22/2023   07:57:29   ( -73.64,-119.56) 06/22/2023   07:58:37  ( -73.53,-117.59)   62.91                68
 06/22/2023   08:48:04   (  73.09,  49.04) 06/22/2023   08:48:11  (  73.07,  49.11)    2.54                 7
 06/22/2023   09:38:47   ( -72.97,-143.41) 06/22/2023   09:37:41  ( -72.96,-143.49)    2.97                66
 06/24/2023   23:24:32   (  73.28,-170.45) 06/24/2023   23:25:44  (  73.21,-170.02)   15.96                72
 06/25/2023   00:15:13   ( -73.07,  -2.67) 06/25/2023   00:15:15  ( -73.04,  -2.72)    2.91                 2