Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 8 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)
 08/21/2020   06:56:16   (  69.93,  73.98) 08/21/2020   06:57:22  (  69.84,  76.27)   88.18                66
 08/21/2020   07:46:41   ( -68.96,-117.31) 08/21/2020   07:47:06  ( -68.95,-117.28)    1.28                25
 08/21/2020   08:37:24   (  68.81,  50.21) 08/21/2020   08:36:34  (  68.80,  50.17)    2.24                50
 08/24/2020   00:03:04   ( -68.97,  -1.40) 08/24/2020   00:03:35  ( -68.97,  -1.38)    1.00                31
 08/24/2020   00:53:47   (  68.81, 166.11) 08/24/2020   00:53:03  (  68.81, 166.06)    2.28                44
 08/26/2020   16:19:26   ( -68.97, 114.50) 08/26/2020   16:20:03  ( -68.98, 114.52)    1.22                37
 08/26/2020   17:10:09   (  68.82, -77.98) 08/26/2020   17:09:31  (  68.82, -78.05)    2.67                38
 08/29/2020   08:35:49   ( -68.98,-129.60) 08/29/2020   08:36:32  ( -68.99,-129.59)    1.24                43
 08/29/2020   09:26:33   (  68.88,  37.85) 08/29/2020   09:25:59  (  68.88,  37.91)    2.60                34
 09/01/2020   00:52:12   ( -68.99, -13.70) 09/01/2020   00:53:01  ( -69.00, -13.70)    0.89                49
 09/01/2020   01:42:56   (  68.89, 153.75) 09/01/2020   01:42:28  (  68.89, 153.80)    2.20                28