Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 9.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(AQUA) AQUA Lat/Lon    Distance(km)  Time Diff(sec)
 01/10/2021   21:44:54   ( -46.25,-113.56) 01/10/2021   21:44:58  ( -46.30,-113.74)   15.08                 4
 01/10/2021   22:34:18   (  50.75,  55.69) 01/10/2021   22:33:06  (  50.75,  55.70)    0.92                72
 01/13/2021   14:01:07   ( -46.71,   2.55) 01/13/2021   14:01:19  ( -46.75,   2.31)   18.99                12
 01/13/2021   14:51:02   (  49.42, 171.02) 01/13/2021   14:49:57  (  49.42, 171.02)    0.24                65
 01/16/2021   06:17:21   ( -47.11, 118.64) 01/16/2021   06:17:40  ( -47.19, 118.36)   23.06                19
 01/16/2021   07:07:44   (  48.20, -73.58) 01/16/2021   07:06:46  (  48.20, -73.59)    0.77                58
 01/18/2021   22:33:34   ( -47.56,-125.24) 01/18/2021   22:34:01  ( -47.63,-125.58)   26.59                27
 01/18/2021   23:24:26   (  46.98,  41.84) 01/18/2021   23:23:35  (  46.97,  41.82)    2.04                51
 01/21/2021   14:49:46   ( -48.01,  -9.13) 01/21/2021   14:50:21  ( -48.06,  -9.53)   30.43                35