Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2019 5 9.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(METOP-A) METOP-A Lat/Lon    Distance(km)  Time Diff(sec)
 05/09/2019   03:33:50   (  74.39, 115.89) 05/09/2019   03:33:19  (  74.38, 115.93)    2.07                31
 05/09/2019   04:24:33   ( -74.38, -76.77) 05/09/2019   04:24:01  ( -74.37, -76.75)    1.08                32
 05/09/2019   05:15:19   (  74.38,  90.54) 05/09/2019   05:14:40  (  74.39,  90.64)    3.29                39
 05/09/2019   06:06:02   ( -74.37,-102.12) 05/09/2019   06:05:22  ( -74.39,-102.04)    3.09                40
 05/09/2019   06:56:48   (  74.37,  65.19) 05/09/2019   06:56:02  (  74.36,  65.22)    1.55                46
 05/09/2019   07:47:31   ( -74.36,-127.47) 05/09/2019   07:46:44  ( -74.36,-127.46)    0.57                47
 05/09/2019   08:38:17   (  74.37,  39.84) 05/09/2019   08:37:23  (  74.38,  39.92)    3.02                54
 05/09/2019   09:29:00   ( -74.36,-152.82) 05/09/2019   09:28:05  ( -74.38,-152.76)    3.01                55
 05/09/2019   10:19:46   (  74.36,  14.49) 05/09/2019   10:18:45  (  74.35,  14.50)    1.06                61
 05/09/2019   11:10:29   ( -74.35,-178.17) 05/09/2019   11:09:27  ( -74.35,-178.18)    0.31                62
 05/09/2019   12:01:15   (  74.35, -10.86) 05/09/2019   12:00:06  (  74.37, -10.79)    2.83                69
 05/09/2019   12:51:58   ( -74.34, 156.48) 05/09/2019   12:50:48  ( -74.36, 156.53)    3.03                70
 05/09/2019   13:42:43   (  74.29, -36.09) 05/09/2019   13:41:29  (  74.28, -36.34)    7.56                74
 05/09/2019   14:33:25   ( -74.23, 131.38) 05/09/2019   14:32:11  ( -74.28, 130.98)   13.13                74
 05/09/2019   15:24:06   (  73.99, -60.70) 05/09/2019   15:22:56  (  74.01, -62.36)   51.04                70
 05/09/2019   16:14:49   ( -73.98, 106.64) 05/09/2019   16:13:39  ( -73.96, 104.84)   55.24                70
 05/09/2019   17:05:29   (  73.68, -85.34) 05/09/2019   17:04:24  (  73.67, -88.48)   98.24                65
 05/09/2019   17:56:12   ( -73.68,  82.00) 05/09/2019   17:55:06  ( -73.67,  78.85)   98.48                66