Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 8.  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)
 01/08/2021   05:28:37   ( -46.04, 130.43) 01/08/2021   05:28:34  ( -46.04, 130.28)   11.81                 3
 01/08/2021   06:13:52   (  64.61, -51.17) 01/08/2021   06:12:39  (  64.67, -51.65)   23.68                73
 01/10/2021   21:44:54   ( -46.27,-113.55) 01/10/2021   21:44:58  ( -46.31,-113.74)   15.03                 4
 01/10/2021   22:34:16   (  50.88,  55.75) 01/10/2021   22:33:04  (  50.88,  55.76)    0.65                72
 01/13/2021   14:01:07   ( -46.73,   2.56) 01/13/2021   14:01:19  ( -46.76,   2.31)   19.01                12
 01/13/2021   14:50:57   (  49.73, 171.15) 01/13/2021   14:49:52  (  49.73, 171.15)    0.30                65
 01/16/2021   06:17:21   ( -47.13, 118.65) 01/16/2021   06:17:40  ( -47.20, 118.37)   22.80                19
 01/16/2021   07:07:37   (  48.63, -73.40) 01/16/2021   07:06:39  (  48.62, -73.42)    1.58                58
 01/18/2021   22:33:33   ( -47.59,-125.23) 01/18/2021   22:34:00  ( -47.64,-125.58)   26.55                27
 01/18/2021   23:24:42   (  46.03,  41.46) 01/18/2021   23:23:50  (  46.03,  41.46)    0.42                52
 01/21/2021   14:49:47   ( -47.99,  -9.14) 01/21/2021   14:50:21  ( -48.06,  -9.53)   30.09                34