Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-C
TLE Epoch: 2020 12 16.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-C) METOP-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/16/2020   04:58:04   (  73.02,  98.61) 12/16/2020   04:57:32  (  73.03,  98.52)    3.07                32
 12/16/2020   05:48:48   ( -73.04, -94.10) 12/16/2020   05:48:13  ( -73.02, -94.16)    2.62                35
 12/16/2020   06:39:33   (  73.02,  73.24) 12/16/2020   06:38:53  (  73.06,  73.24)    3.77                40
 12/16/2020   07:30:17   ( -73.04,-119.47) 12/16/2020   07:29:34  ( -73.05,-119.44)    2.09                43
 12/16/2020   08:21:02   (  73.02,  47.87) 12/16/2020   08:20:15  (  73.04,  47.86)    1.68                47
 12/16/2020   09:11:46   ( -73.04,-144.84) 12/16/2020   09:10:56  ( -73.03,-144.82)    0.85                50
 12/16/2020   10:02:31   (  73.02,  22.50) 12/16/2020   10:01:37  (  73.02,  22.48)    0.89                54
 12/16/2020   10:53:15   ( -73.04,-170.21) 12/16/2020   10:52:18  ( -73.01,-170.20)    2.50                57
 12/16/2020   11:44:00   (  73.02,  -2.87) 12/16/2020   11:42:59  (  73.00,  -2.90)    2.85                61
 12/16/2020   12:34:44   ( -73.04, 164.42) 12/16/2020   12:33:39  ( -73.04, 164.53)    3.64                65
 12/16/2020   13:25:29   (  73.02, -28.24) 12/16/2020   13:24:20  (  73.03, -28.18)    2.16                69
 12/16/2020   14:16:13   ( -73.03, 139.05) 12/16/2020   14:15:01  ( -73.03, 139.15)    3.30                72
 12/16/2020   15:06:57   (  72.97, -53.50) 12/16/2020   15:05:43  (  72.96, -53.67)    5.63                74
 12/16/2020   15:57:39   ( -72.88, 114.00) 12/16/2020   15:56:25  ( -72.90, 113.55)   15.04                74
 12/16/2020   16:48:21   (  72.72, -78.33) 12/16/2020   16:47:10  (  72.69, -79.58)   41.32                71
 12/16/2020   17:39:03   ( -72.63,  89.16) 12/16/2020   17:37:52  ( -72.63,  87.64)   50.40                71
 12/16/2020   18:29:44   (  72.41,-103.08) 12/16/2020   18:28:37  (  72.41,-105.47)   80.43                67
 12/16/2020   19:20:26   ( -72.33,  64.41) 12/16/2020   19:19:19  ( -72.36,  61.76)   89.55                67