Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2021 7 4.  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)
 07/06/2021   08:39:08   ( -69.90,-130.05) 07/06/2021   08:39:36  ( -69.93,-130.00)    3.33                28
 07/06/2021   09:29:51   (  69.77,  37.47) 07/06/2021   09:29:04  (  69.76,  37.42)    1.74                47
 07/09/2021   00:55:27   ( -69.92, -14.13) 07/09/2021   00:56:02  ( -69.93, -14.11)    1.96                35
 07/09/2021   01:46:10   (  69.79, 153.38) 07/09/2021   01:45:30  (  69.77, 153.30)    3.66                40
 07/11/2021   17:11:45   ( -69.93, 101.80) 07/11/2021   17:12:27  ( -69.93, 101.77)    1.01                42
 07/11/2021   18:02:28   (  69.81, -90.71) 07/11/2021   18:01:54  (  69.82, -90.74)    1.76                34
 07/14/2021   09:28:04   ( -69.94,-142.29) 07/14/2021   09:28:53  ( -69.92,-142.36)    3.47                49
 07/14/2021   10:18:47   (  69.83,  25.20) 07/14/2021   10:18:20  (  69.81,  25.13)    3.68                27
 07/14/2021   11:09:12   ( -68.84,-166.06) 07/14/2021   11:08:05  ( -68.88,-168.47)   96.68                67
 07/17/2021   01:44:23   ( -69.96, -26.37) 07/17/2021   01:45:18  ( -69.97, -26.41)    1.84                55
 07/17/2021   02:35:06   (  69.85, 141.11) 07/17/2021   02:34:45  (  69.85, 141.07)    1.71                21