Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 1 30.  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)
 01/30/2020   13:56:41   ( -69.89, 148.46) 01/30/2020   13:57:47  ( -69.79, 150.98)   97.19                66
 01/30/2020   14:47:07   (  68.81, -42.69) 01/30/2020   14:47:30  (  68.81, -42.67)    1.11                23
 01/30/2020   15:37:47   ( -68.66, 124.82) 01/30/2020   15:37:00  ( -68.70, 124.82)    3.54                47
 02/02/2020   07:03:32   (  68.82,  73.20) 02/02/2020   07:04:03  (  68.79,  73.17)    2.85                31
 02/02/2020   07:54:12   ( -68.66,-119.28) 02/02/2020   07:53:33  ( -68.68,-119.33)    3.04                39
 02/04/2020   23:19:57   (  68.82,-170.91) 02/04/2020   23:20:35  (  68.82,-170.92)    0.63                38
 02/05/2020   00:10:38   ( -68.72,  -3.45) 02/05/2020   00:10:05  ( -68.72,  -3.42)    0.94                33
 02/07/2020   15:36:21   (  68.83, -55.02) 02/07/2020   15:37:06  (  68.85, -55.03)    2.44                45
 02/07/2020   16:27:02   ( -68.72, 112.46) 02/07/2020   16:26:37  ( -68.69, 112.41)    3.20                25
 02/10/2020   07:52:47   (  68.89,  60.80) 02/10/2020   07:53:38  (  68.87,  60.86)    3.10                51
 02/10/2020   08:43:27   ( -68.72,-131.64) 02/10/2020   08:43:09  ( -68.72,-131.70)    2.14                18
 02/10/2020   09:33:57   (  67.86,  36.77) 02/10/2020   09:32:49  (  67.87,  34.94)   76.65                68
 02/13/2020   00:09:12   (  68.89, 176.70) 02/13/2020   00:10:10  (  68.88, 176.75)    2.27                58
 02/13/2020   00:59:52   ( -68.71, -15.74) 02/13/2020   00:59:41  ( -68.73, -15.81)    3.47                11
 02/13/2020   01:50:26   (  68.08, 152.39) 02/13/2020   01:49:16  (  68.17, 151.15)   52.35                70