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   13:56:42   ( -69.91, 148.43) 01/30/2020   13:57:48  ( -69.77, 150.95)   97.93                66
 01/30/2020   14:47:07   (  68.78, -42.65) 01/30/2020   14:47:31  (  68.79, -42.70)    1.97                24
 01/30/2020   15:37:48   ( -68.69, 124.80) 01/30/2020   15:37:01  ( -68.67, 124.80)    1.30                47
 02/02/2020   07:03:32   (  68.84,  73.17) 02/02/2020   07:04:02  (  68.83,  73.21)    2.36                30
 02/02/2020   07:54:12   ( -68.69,-119.30) 02/02/2020   07:53:32  ( -68.72,-119.29)    3.48                40
 02/04/2020   23:19:57   (  68.84,-170.94) 02/04/2020   23:20:34  (  68.86,-170.88)    2.67                37
 02/05/2020   00:10:37   ( -68.68,  -3.40) 02/05/2020   00:10:05  ( -68.70,  -3.45)    2.34                32
 02/07/2020   15:36:22   (  68.85, -55.05) 02/07/2020   15:37:07  (  68.83, -55.05)    2.46                45
 02/07/2020   16:27:03   ( -68.74, 112.43) 02/07/2020   16:26:37  ( -68.73, 112.45)    1.47                26
 02/10/2020   07:52:47   (  68.86,  60.85) 02/10/2020   07:53:39  (  68.85,  60.84)    0.86                52
 02/10/2020   08:43:28   ( -68.74,-131.67) 02/10/2020   08:43:09  ( -68.75,-131.65)    1.93                19
 02/10/2020   09:33:57   (  67.83,  36.81) 02/10/2020   09:32:49  (  67.91,  34.98)   77.18                68
 02/13/2020   00:09:11   (  68.86, 176.74) 02/13/2020   00:10:10  (  68.86, 176.72)    0.90                59
 02/13/2020   00:59:52   ( -68.73, -15.77) 02/13/2020   00:59:41  ( -68.72, -15.83)    3.39                11
 02/13/2020   01:50:26   (  68.10, 152.36) 02/13/2020   01:49:16  (  68.15, 151.12)   51.63                70