Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 21.  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)
 07/22/2020   19:55:46   (  68.91,-119.61) 07/22/2020   19:56:21  (  68.90,-119.65)    2.06                35
 07/22/2020   20:46:28   ( -68.82,  47.83) 07/22/2020   20:45:51  ( -68.79,  47.84)    3.26                37
 07/25/2020   12:12:09   (  68.91,  -3.69) 07/25/2020   12:12:50  (  68.92,  -3.75)    2.96                41
 07/25/2020   13:02:51   ( -68.81, 163.75) 07/25/2020   13:02:20  ( -68.82, 163.75)    0.63                31
 07/28/2020   04:28:33   (  68.95, 112.16) 07/28/2020   04:29:19  (  68.94, 112.16)    1.04                46
 07/28/2020   05:19:15   ( -68.86, -80.40) 07/28/2020   05:18:49  ( -68.84, -80.34)    2.93                26
 07/28/2020   06:09:39   (  67.71,  88.39) 07/28/2020   06:08:33  (  67.78,  86.03)   99.92                66
 07/30/2020   20:44:56   (  68.95,-131.92) 07/30/2020   20:45:48  (  68.96,-131.94)    1.83                52
 07/30/2020   21:35:37   ( -68.85,  35.53) 07/30/2020   21:35:17  ( -68.87,  35.57)    2.31                20
 07/30/2020   22:26:05   (  67.92,-155.95) 07/30/2020   22:24:57  (  68.02,-157.81)   78.18                68
 08/02/2020   13:01:19   (  69.00, -16.08) 08/02/2020   13:02:16  (  68.98, -16.03)    2.36                57
 08/02/2020   13:52:00   ( -68.85, 151.45) 08/02/2020   13:51:47  ( -68.83, 151.41)    2.38                13
 08/02/2020   14:42:32   (  68.14, -40.31) 08/02/2020   14:41:23  (  68.21, -41.71)   58.62                69