Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 5 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)
 05/11/2021   13:49:10   (  46.10, -12.30) 05/11/2021   13:49:56  (  46.09, -12.19)    8.04                46
 05/11/2021   14:40:21   ( -47.80, 154.34) 05/11/2021   14:39:50  ( -47.89, 154.77)   33.74                31
 05/14/2021   06:05:29   (  46.08, 103.65) 05/14/2021   06:06:25  (  46.09, 103.69)    3.00                56
 05/14/2021   06:56:31   ( -47.26, -89.50) 05/14/2021   06:56:10  ( -47.34, -89.14)   28.72                21
 05/16/2021   22:22:08   (  47.28,-140.89) 05/16/2021   22:23:13  (  47.27,-140.88)    0.89                65
 05/16/2021   23:12:39   ( -46.67,  26.68) 05/16/2021   23:12:28  ( -46.74,  26.97)   23.58                11
 05/19/2021   14:39:23   (  50.48, -26.35) 05/19/2021   14:40:36  (  50.48, -26.31)    2.85                73
 05/19/2021   15:28:48   ( -46.08, 142.85) 05/19/2021   15:28:47  ( -46.15, 143.07)   18.44                 1
 05/22/2021   07:01:52   (  71.07,  72.16) 05/22/2021   07:03:05  (  71.22,  73.14)   38.74                73
 05/22/2021   07:45:07   ( -46.07,-101.20) 05/22/2021   07:45:15  ( -46.09,-101.03)   13.77                 8