Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 6 9.  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)
 06/10/2021   01:42:01   ( -55.40, -13.99) 06/10/2021   01:43:14  ( -55.39, -13.96)    2.10                73
 06/10/2021   02:30:06   (  46.08, 157.68) 06/10/2021   02:30:05  (  46.07, 157.77)    6.42                 1
 06/12/2021   18:04:36   ( -75.57,  76.57) 06/12/2021   18:05:50  ( -75.82,  77.78)   43.83                74
 06/12/2021   18:46:27   (  46.20, -86.42) 06/12/2021   18:46:36  (  46.19, -86.40)    2.04                 9
 06/12/2021   19:38:14   ( -49.98,  79.30) 06/12/2021   19:37:05  ( -50.03,  79.73)   30.64                69
 06/15/2021   10:27:37   ( -75.16,  83.01) 06/15/2021   10:28:50  ( -75.60,  80.61)   83.05                73
 06/15/2021   11:03:23   (  48.33,  28.64) 06/15/2021   11:03:41  (  48.33,  28.66)    1.33                18
 06/15/2021   11:54:23   ( -49.41,-164.50) 06/15/2021   11:53:24  ( -49.44,-164.15)   25.73                59
 06/18/2021   03:20:16   (  50.30, 143.72) 06/18/2021   03:20:43  (  50.29, 143.73)    0.71                27
 06/18/2021   04:10:32   ( -48.83, -48.31) 06/18/2021   04:09:43  ( -48.86, -48.03)   20.70                49
 06/20/2021   19:37:05   (  52.08,-101.19) 06/20/2021   19:37:41  (  52.08,-101.18)    0.15                36