Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 7 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)
 07/20/2020   03:39:23   (  68.91, 124.48) 07/20/2020   03:39:52  (  68.89, 124.46)    1.91                29
 07/20/2020   04:30:04   ( -68.77, -68.01) 07/20/2020   04:29:22  ( -68.78, -68.05)    2.55                42
 07/22/2020   19:55:46   (  68.90,-119.60) 07/22/2020   19:56:21  (  68.92,-119.64)    2.14                35
 07/22/2020   20:46:28   ( -68.81,  47.85) 07/22/2020   20:45:51  ( -68.81,  47.86)    0.70                37
 07/25/2020   12:12:10   (  68.95,  -3.75) 07/25/2020   12:12:50  (  68.94,  -3.73)    1.92                40
 07/25/2020   13:02:51   ( -68.80, 163.77) 07/25/2020   13:02:20  ( -68.83, 163.77)    3.17                31
 07/28/2020   04:28:33   (  68.95, 112.16) 07/28/2020   04:29:19  (  68.95, 112.17)    0.80                46
 07/28/2020   05:19:14   ( -68.85, -80.39) 07/28/2020   05:18:48  ( -68.85, -80.32)    2.61                26
 07/28/2020   06:09:38   (  67.71,  88.40) 07/28/2020   06:08:32  (  67.79,  86.04)   99.77                66
 07/30/2020   20:44:55   (  68.95,-131.92) 07/30/2020   20:45:47  (  68.97,-131.92)    2.82                52
 07/30/2020   21:35:37   ( -68.85,  35.53) 07/30/2020   21:35:18  ( -68.82,  35.51)    3.43                19
 07/30/2020   22:26:05   (  67.92,-155.95) 07/30/2020   22:24:57  (  68.03,-157.80)   77.94                68
 08/02/2020   13:01:19   (  69.00, -16.08) 08/02/2020   13:02:16  (  68.99, -16.02)    2.62                57
 08/02/2020   13:52:00   ( -68.85, 151.44) 08/02/2020   13:51:47  ( -68.84, 151.42)    1.67                13
 08/02/2020   14:42:33   (  68.19, -40.38) 08/02/2020   14:41:23  (  68.21, -41.70)   54.69                70