Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 5 10.  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)
 05/11/2021   13:49:09   (  46.06, -12.28) 05/11/2021   13:49:55  (  46.05, -12.18)    8.09                46
 05/11/2021   14:40:21   ( -47.82, 154.33) 05/11/2021   14:39:50  ( -47.91, 154.76)   33.73                31
 05/14/2021   06:05:29   (  46.10, 103.64) 05/14/2021   06:06:25  (  46.10, 103.68)    3.04                56
 05/14/2021   06:56:30   ( -47.23, -89.48) 05/14/2021   06:56:09  ( -47.30, -89.12)   28.62                21
 05/16/2021   22:22:11   (  47.41,-140.95) 05/16/2021   22:23:16  (  47.41,-140.94)    1.12                65
 05/16/2021   23:12:39   ( -46.64,  26.69) 05/16/2021   23:12:28  ( -46.70,  26.98)   23.45                11
 05/19/2021   14:39:27   (  50.74, -26.46) 05/19/2021   14:40:40  (  50.74, -26.42)    3.22                73
 05/19/2021   15:28:48   ( -46.11, 142.84) 05/19/2021   15:28:47  ( -46.17, 143.07)   18.34                 1
 05/22/2021   07:01:57   (  71.35,  71.67) 05/22/2021   07:03:10  (  71.51,  72.67)   39.26                73
 05/22/2021   07:45:07   ( -46.10,-101.21) 05/22/2021   07:45:15  ( -46.11,-101.03)   13.84                 8