Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 2 13.  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)
 02/14/2021   18:07:28   (  48.26, 121.68) 02/14/2021   18:08:07  (  48.36, 121.15)   40.92                39
 02/14/2021   18:58:55   ( -46.00, -71.94) 02/14/2021   18:58:16  ( -46.03, -72.12)   14.33                39
 02/17/2021   10:23:39   (  48.81,-122.15) 02/17/2021   10:24:27  (  48.92,-122.74)   44.98                48
 02/17/2021   11:15:15   ( -46.04,  44.00) 02/17/2021   11:14:45  ( -46.05,  43.77)   18.30                30
 02/17/2021   11:42:46   (  50.41,  17.26) 02/17/2021   11:41:34  (  50.62,  18.42)   85.03                72
 02/20/2021   02:39:50   (  49.30,  -6.01) 02/20/2021   02:40:47  (  49.42,  -6.66)   48.87                57
 02/20/2021   03:31:35   ( -46.02, 159.93) 02/20/2021   03:31:13  ( -46.07, 159.66)   21.71                22
 02/20/2021   04:05:09   (  70.68, 116.40) 02/20/2021   04:03:56  (  70.98, 118.27)   76.26                73
 02/22/2021   18:56:01   (  49.85, 110.17) 02/22/2021   18:57:07  (  49.97, 109.45)   52.71                66
 02/22/2021   19:47:55   ( -46.05, -84.13) 02/22/2021   19:47:42  ( -46.08, -84.46)   25.52                13
 02/22/2021   20:27:24   (  80.57, 144.39) 02/22/2021   20:26:11  (  81.04, 143.06)   58.29                73
 02/25/2021   12:04:16   ( -46.02,  31.79) 02/25/2021   12:04:11  ( -46.09,  31.43)   28.97                 5