Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 11.  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)
 01/13/2021   14:01:07   ( -46.71,   2.55) 01/13/2021   14:01:19  ( -46.74,   2.31)   19.01                12
 01/13/2021   14:51:02   (  49.41, 171.02) 01/13/2021   14:49:57  (  49.41, 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  (  48.19, -73.59)    0.77                58
 01/18/2021   22:33:34   ( -47.56,-125.25) 01/18/2021   22:34:01  ( -47.62,-125.59)   26.60                27
 01/18/2021   23:24:26   (  46.97,  41.84) 01/18/2021   23:23:35  (  46.97,  41.81)    2.07                51
 01/21/2021   14:49:45   ( -48.07,  -9.10) 01/21/2021   14:50:20  ( -48.11,  -9.51)   30.50                35
 01/21/2021   15:41:02   (  46.04, 157.39) 01/21/2021   15:40:18  (  46.03, 157.35)    3.67                44
 01/24/2021   07:05:59   ( -48.46, 106.99) 01/24/2021   07:06:41  ( -48.53, 106.54)   33.93                42