Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 1 3.  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)
 01/05/2021   12:20:23   (  49.88,-151.19) 01/05/2021   12:21:30  (  49.94,-151.69)   36.15                67
 01/05/2021   13:12:17   ( -46.02,  14.49) 01/05/2021   13:12:06  ( -46.03,  14.39)    7.85                11
 01/05/2021   13:52:29   (  79.37,-129.85) 01/05/2021   13:51:16  (  79.75,-131.43)   52.70                73
 01/08/2021   05:28:38   ( -46.03, 130.42) 01/08/2021   05:28:34  ( -46.08, 130.29)   11.51                 4
 01/08/2021   06:13:50   (  64.76, -51.03) 01/08/2021   06:12:37  (  64.82, -51.52)   23.84                73
 01/10/2021   21:44:55   ( -46.26,-113.56) 01/10/2021   21:44:59  ( -46.29,-113.75)   14.79                 4
 01/10/2021   22:34:14   (  51.03,  55.82) 01/10/2021   22:33:02  (  51.03,  55.83)    0.47                72
 01/13/2021   14:01:07   ( -46.72,   2.55) 01/13/2021   14:01:19  ( -46.74,   2.31)   18.89                12
 01/13/2021   14:50:53   (  49.94, 171.25) 01/13/2021   14:49:48  (  49.94, 171.24)    0.60                65
 01/16/2021   06:17:21   ( -47.12, 118.64) 01/16/2021   06:17:40  ( -47.18, 118.36)   22.47                19