Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 5 15.  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)
 05/16/2021   22:22:11   (  47.44,-140.96) 05/16/2021   22:23:16  (  47.43,-140.94)    0.97                65
 05/16/2021   23:12:39   ( -46.67,  26.68) 05/16/2021   23:12:28  ( -46.74,  26.97)   23.28                11
 05/19/2021   14:39:44   (  51.71, -26.92) 05/19/2021   14:40:57  (  51.71, -26.85)    4.78                73
 05/19/2021   15:28:47   ( -46.06, 142.87) 05/19/2021   15:28:46  ( -46.09, 143.10)   17.83                 1
 05/22/2021   07:02:44   (  73.83,  66.54) 05/22/2021   07:03:57  (  74.03,  67.77)   43.91                73
 05/22/2021   07:45:05   ( -46.11,-101.21) 05/22/2021   07:45:15  ( -46.16,-101.05)   13.38                10
 05/22/2021   08:37:01   (  50.04,  64.43) 05/22/2021   08:35:51  (  50.13,  65.00)   41.74                70
 05/24/2021   23:26:15   (  75.29,  68.59) 05/24/2021   23:27:28  (  75.71,  66.26)   79.44                73
 05/25/2021   00:01:22   ( -46.06,  14.76) 05/25/2021   00:01:42  ( -46.06,  14.87)    8.42                20
 05/25/2021   00:53:08   (  49.42,-179.34) 05/25/2021   00:52:09  (  49.51,-178.85)   36.61                59
 05/27/2021   16:17:40   ( -46.10, 130.69) 05/27/2021   16:18:11  ( -46.09, 130.74)    3.60                31