Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 11 20.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 11/21/2019   21:58:49   (  68.84,-150.69) 11/21/2019   21:59:40  (  68.84,-150.66)    1.36                51
 11/21/2019   22:49:30   ( -68.69,  16.83) 11/21/2019   22:49:11  ( -68.68,  16.78)    2.29                19
 11/21/2019   23:39:59   (  67.81,-174.73) 11/21/2019   23:38:51  (  67.83,-176.59)   77.77                68
 11/24/2019   14:15:14   (  68.81, -34.76) 11/24/2019   14:16:09  (  68.82, -34.80)    1.92                55
 11/24/2019   15:05:56   ( -68.71, 132.69) 11/24/2019   15:05:39  ( -68.72, 132.71)    0.88                17
 11/24/2019   15:56:26   (  67.89, -58.94) 11/24/2019   15:55:17  (  67.98, -60.53)   67.44                69
 11/27/2019   06:31:40   (  68.83,  81.10) 11/27/2019   06:32:37  (  68.86,  81.13)    2.65                57
 11/27/2019   07:22:21   ( -68.68,-111.38) 11/27/2019   07:22:08  ( -68.70,-111.43)    2.89                13
 11/27/2019   08:12:54   (  68.02,  56.79) 11/27/2019   08:11:44  (  68.08,  55.46)   55.44                70
 11/29/2019   22:48:06   (  68.86,-163.04) 11/29/2019   22:49:06  (  68.84,-163.00)    2.74                60
 11/29/2019   23:38:47   ( -68.71,   4.48) 11/29/2019   23:38:37  ( -68.69,   4.44)    2.48                10
 11/30/2019   00:29:21   (  68.10, 172.58) 11/30/2019   00:28:11  (  68.18, 171.47)   46.83                70
 12/02/2019   15:04:30   (  68.84, -47.12) 12/02/2019   15:05:34  (  68.84, -47.12)    0.40                64
 12/02/2019   15:55:12   ( -68.74, 120.33) 12/02/2019   15:55:04  ( -68.74, 120.39)    2.38                 8
 12/02/2019   16:45:48   (  68.24, -71.70) 12/02/2019   16:44:37  (  68.29, -72.53)   34.19                71