Simultaneous Nadir Overpasses (SNOs) between FY3D and METOP-A
TLE Epoch: 2019 12 19.  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)
 12/20/2019   16:06:48   (  75.54, -75.78) 12/20/2019   16:07:55  (  75.51, -73.19)   72.01                67
 12/20/2019   16:57:30   ( -75.47,  91.77) 12/20/2019   16:58:39  ( -75.41,  93.82)   57.83                69
 12/20/2019   17:48:11   (  75.26,-100.27) 12/20/2019   17:49:23  (  75.21, -99.44)   24.30                72
 12/20/2019   18:38:53   ( -75.18,  67.27) 12/20/2019   18:40:06  ( -75.15,  67.73)   13.66                73
 12/20/2019   19:29:37   (  75.11,-125.21) 12/20/2019   19:30:47  (  75.09,-125.10)    3.39                70
 12/20/2019   20:20:20   ( -75.08,  42.19) 12/20/2019   20:21:29  ( -75.09,  42.20)    0.59                69
 12/20/2019   21:11:05   (  75.05,-150.42) 12/20/2019   21:12:09  (  75.07,-150.50)    2.97                64
 12/20/2019   22:01:49   ( -75.08,  16.83) 12/20/2019   22:02:51  ( -75.07,  16.81)    1.29                62
 12/20/2019   22:52:34   (  75.05,-175.78) 12/20/2019   22:53:31  (  75.05,-175.89)    3.40                57
 12/20/2019   23:43:18   ( -75.07,  -8.52) 12/20/2019   23:44:13  ( -75.05,  -8.59)    3.17                55
 12/21/2019   00:34:04   (  75.09, 158.73) 12/21/2019   00:34:52  (  75.08, 158.85)    3.50                48
 12/21/2019   01:24:47   ( -75.07, -33.88) 12/21/2019   01:25:34  ( -75.08, -33.85)    1.54                47
 12/21/2019   02:15:32   (  75.04, 133.51) 12/21/2019   02:16:14  (  75.06, 133.45)    3.26                42
 12/21/2019   03:06:16   ( -75.06, -59.23) 12/21/2019   03:06:56  ( -75.06, -59.24)    0.34                40
 12/21/2019   03:57:00   (  75.03, 108.16) 12/21/2019   03:57:35  (  75.04, 108.06)    3.13                35
 12/21/2019   04:47:44   ( -75.05, -84.59) 12/21/2019   04:48:17  ( -75.04, -84.63)    2.22                33
 12/21/2019   05:38:30   (  75.08,  82.66) 12/21/2019   05:38:56  (  75.07,  82.80)    3.82                26
 12/21/2019   06:29:13   ( -75.05,-109.94) 12/21/2019   06:29:38  ( -75.07,-109.89)    2.50                25
 12/21/2019   07:19:59   (  75.07,  57.31) 12/21/2019   07:20:18  (  75.05,  57.40)    3.22                19
 12/21/2019   08:10:42   ( -75.04,-135.30) 12/21/2019   08:11:00  ( -75.05,-135.29)    0.62                18
 12/21/2019   09:01:27   (  75.02,  32.09) 12/21/2019   09:01:40  (  75.03,  32.01)    3.12                13
 12/21/2019   09:52:11   ( -75.04,-160.65) 12/21/2019   09:52:22  ( -75.03,-160.68)    1.27                11
 12/21/2019   10:42:56   (  75.01,   6.73) 12/21/2019   10:43:02  (  75.02,   6.61)    3.57                 6
 12/21/2019   11:33:40   ( -75.03, 173.99) 12/21/2019   11:33:44  ( -75.01, 173.92)    3.15                 4
 12/21/2019   12:24:26   (  75.05, -18.76) 12/21/2019   12:24:23  (  75.04, -18.65)    3.32                 3
 12/21/2019   13:15:09   ( -75.03, 148.64) 12/21/2019   13:15:05  ( -75.04, 148.66)    1.58                 4
 12/21/2019   14:05:55   (  75.05, -44.11) 12/21/2019   14:05:45  (  75.03, -44.04)    3.26                10
 12/21/2019   14:56:38   ( -75.02, 123.28) 12/21/2019   14:56:27  ( -75.02, 123.27)    0.34                11
 12/21/2019   15:47:23   (  74.99, -69.33) 12/21/2019   15:47:07  (  75.01, -69.44)    3.28                16
 12/21/2019   16:38:07   ( -75.02,  97.92) 12/21/2019   16:37:49  ( -75.00,  97.88)    2.20                18
 12/21/2019   17:28:53   (  75.04, -94.82) 12/21/2019   17:28:28  (  75.03, -94.70)    3.66                25
 12/21/2019   18:19:36   ( -75.01,  72.57) 12/21/2019   18:19:10  ( -75.03,  72.62)    2.54                26
 12/21/2019   19:10:22   (  75.03,-120.18) 12/21/2019   19:09:50  (  75.02,-120.09)    3.08                32
 12/21/2019   20:01:05   ( -75.01,  47.21) 12/21/2019   20:00:32  ( -75.01,  47.22)    0.67                33
 12/21/2019   20:51:50   (  74.98,-145.40) 12/21/2019   20:51:12  (  75.00,-145.49)    3.25                38
 12/21/2019   21:42:34   ( -75.00,  21.86) 12/21/2019   21:41:54  ( -74.99,  21.83)    1.25                40
 12/21/2019   22:33:19   (  74.97,-170.75) 12/21/2019   22:32:34  (  74.98,-170.88)    3.70                45
 12/21/2019   23:24:03   ( -74.99,  -3.50) 12/21/2019   23:23:16  ( -74.97,  -3.57)    3.12                47
 12/22/2019   00:14:49   (  75.02, 163.75) 12/22/2019   00:13:55  (  75.01, 163.86)    3.18                54
 12/22/2019   01:05:32   ( -74.99, -28.85) 12/22/2019   01:04:37  ( -75.00, -28.83)    1.62                55
 12/22/2019   01:56:18   (  75.01, 138.40) 12/22/2019   01:55:17  (  74.99, 138.46)    3.16                61
 12/22/2019   02:47:01   ( -74.98, -54.21) 12/22/2019   02:45:59  ( -74.98, -54.22)    0.35                62
 12/22/2019   03:37:46   (  74.96, 113.18) 12/22/2019   03:36:39  (  74.97, 113.07)    3.41                67
 12/22/2019   04:28:30   ( -74.98, -79.57) 12/22/2019   04:27:21  ( -74.96, -79.62)    2.17                69
 12/22/2019   05:19:15   (  74.95,  87.82) 12/22/2019   05:18:01  (  74.95,  87.68)    4.30                74
 12/22/2019   06:09:58   ( -74.93,-104.79) 12/22/2019   06:08:44  ( -74.90,-105.14)   10.80                74
 12/22/2019   07:00:38   (  74.66,  63.27) 12/22/2019   06:59:28  (  74.69,  61.62)   48.48                70
 12/22/2019   07:51:21   ( -74.63,-129.34) 12/22/2019   07:50:11  ( -74.63,-131.18)   54.22                70
 12/22/2019   08:42:01   (  74.36,  38.69) 12/22/2019   08:40:56  (  74.37,  35.47)   96.37                65