Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 10.  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   ( -46.28,-113.55) 01/10/2021   21:44:58  ( -46.33,-113.73)   15.17                 4
 01/10/2021   22:34:19   (  50.71,  55.68) 01/10/2021   22:33:07  (  50.72,  55.69)    1.03                72
 01/13/2021   14:01:07   ( -46.74,   2.56) 01/13/2021   14:01:19  ( -46.78,   2.32)   19.05                12
 01/13/2021   14:51:04   (  49.33, 170.98) 01/13/2021   14:49:59  (  49.33, 170.98)    0.41                65
 01/16/2021   06:17:19   ( -47.19, 118.67) 01/16/2021   06:17:39  ( -47.22, 118.37)   23.07                20
 01/16/2021   07:07:46   (  48.05, -73.64) 01/16/2021   07:06:48  (  48.05, -73.65)    0.49                58
 01/18/2021   22:33:33   ( -47.58,-125.23) 01/18/2021   22:34:00  ( -47.66,-125.57)   26.71                27
 01/18/2021   23:24:29   (  46.77,  41.76) 01/18/2021   23:23:38  (  46.76,  41.74)    1.63                51
 01/21/2021   14:49:46   ( -48.03,  -9.12) 01/21/2021   14:50:21  ( -48.09,  -9.52)   30.43                35