Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 9 25.  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)
 09/25/2020   04:10:20   (  69.00, 116.84) 09/25/2020   04:10:43  (  69.01, 116.86)    1.16                23
 09/25/2020   05:01:01   ( -68.91, -75.71) 09/25/2020   05:00:13  ( -68.89, -75.65)    2.97                48
 09/27/2020   20:26:43   (  69.02,-127.27) 09/27/2020   20:27:12  (  69.02,-127.25)    0.89                29
 09/27/2020   21:17:24   ( -68.93,  40.18) 09/27/2020   21:16:42  ( -68.91,  40.24)    3.43                42
 09/30/2020   12:43:05   (  69.04, -11.39) 09/30/2020   12:43:40  (  69.03, -11.36)    2.26                35
 09/30/2020   13:33:45   ( -68.89, 156.14) 09/30/2020   13:33:10  ( -68.92, 156.14)    3.08                35
 10/03/2020   04:59:27   (  69.02, 104.56) 10/03/2020   05:00:09  (  69.03, 104.53)    2.52                42
 10/03/2020   05:50:08   ( -68.91, -87.98) 10/03/2020   05:49:39  ( -68.93, -87.97)    2.04                29
 10/05/2020   21:15:50   (  69.04,-139.56) 10/05/2020   21:16:38  (  69.04,-139.59)    1.33                48
 10/05/2020   22:06:31   ( -68.94,  27.91) 10/05/2020   22:06:08  ( -68.94,  27.92)    0.74                23
 10/05/2020   22:56:57   (  67.86,-163.38) 10/05/2020   22:55:51  (  67.93,-165.67)   96.21                66
 10/08/2020   13:32:13   (  69.07, -23.68) 10/08/2020   13:33:07  (  69.04, -23.71)    3.14                54
 10/08/2020   14:22:54   ( -68.96, 143.79) 10/08/2020   14:22:37  ( -68.95, 143.81)    1.17                17
 10/08/2020   15:13:24   (  68.10, -47.77) 10/08/2020   15:12:16  (  68.16, -49.52)   72.96                68