Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 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)
 08/21/2020   06:56:16   (  69.91,  74.00) 08/21/2020   06:57:23  (  69.80,  76.21)   85.61                67
 08/21/2020   07:46:41   ( -68.94,-117.29) 08/21/2020   07:47:06  ( -68.97,-117.26)    2.76                25
 08/21/2020   08:37:24   (  68.79,  50.23) 08/21/2020   08:36:34  (  68.81,  50.18)    2.80                50
 08/24/2020   00:03:03   ( -68.95,  -1.38) 08/24/2020   00:03:35  ( -68.93,  -1.43)    3.45                32
 08/24/2020   00:53:47   (  68.85, 166.07) 08/24/2020   00:53:02  (  68.82, 166.08)    3.30                45
 08/26/2020   16:19:26   ( -68.96, 114.52) 08/26/2020   16:20:04  ( -68.94, 114.46)    3.51                38
 08/26/2020   17:10:10   (  68.86, -78.03) 08/26/2020   17:09:31  (  68.83, -78.03)    3.20                39
 08/29/2020   08:35:50   ( -69.02,-129.65) 08/29/2020   08:36:32  ( -69.00,-129.58)    3.41                42
 08/29/2020   09:26:33   (  68.86,  37.87) 08/29/2020   09:25:59  (  68.89,  37.92)    3.12                34
 09/01/2020   00:52:12   ( -68.97, -13.67) 09/01/2020   00:53:01  ( -69.00, -13.70)    3.12                49
 09/01/2020   01:42:56   (  68.87, 153.78) 09/01/2020   01:42:28  (  68.89, 153.80)    1.84                28
 09/01/2020   02:33:21   ( -67.90, -37.64) 09/01/2020   02:32:13  ( -67.95, -39.70)   86.46                68
 09/03/2020   17:08:34   ( -68.99, 102.23) 09/03/2020   17:09:29  ( -69.00, 102.18)    2.51                55
 09/03/2020   17:59:18   (  68.88, -90.32) 09/03/2020   17:58:56  (  68.88, -90.32)    0.10                22
 09/03/2020   18:49:46   ( -68.07,  78.06) 09/03/2020   18:48:37  ( -68.17,  76.44)   68.08                69