Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 3 12.  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)
 03/13/2021   13:24:27   ( -68.71, 159.46) 03/13/2021   13:25:40  ( -68.89, 160.67)   52.38                73
 03/13/2021   14:32:56   (  46.05, 174.73) 03/13/2021   14:32:26  (  46.10, 174.36)   29.16                30
 03/13/2021   15:00:24   ( -50.17, 148.08) 03/13/2021   14:59:12  ( -50.37, 149.12)   77.20                72
 03/16/2021   05:57:40   ( -49.24, 124.66) 03/16/2021   05:58:36  ( -49.37, 123.87)   59.18                56
 03/16/2021   06:49:17   (  46.01, -69.35) 03/16/2021   06:48:55  (  46.10, -69.76)   33.15                22
 03/16/2021   07:16:35   ( -49.64, -95.75) 03/16/2021   07:15:32  ( -49.83, -94.77)   73.36                63
 03/18/2021   22:13:51   ( -49.76,-119.17) 03/18/2021   22:14:56  ( -49.90,-120.03)   63.24                65
 03/18/2021   23:05:37   (  46.02,  46.59) 03/18/2021   23:05:24  (  46.10,  46.12)   37.08                13
 03/18/2021   23:44:53   ( -80.89, -79.01) 03/18/2021   23:43:40  ( -81.41, -80.20)   61.55                73
 03/21/2021   14:57:30   (  46.06, -29.71) 03/21/2021   14:58:03  (  46.15, -29.21)   39.67                33
 03/21/2021   16:06:53   ( -65.86, -17.83) 03/21/2021   16:05:40  ( -65.98, -18.75)   43.63                73
 03/24/2021   07:13:51   (  46.12,  86.21) 03/24/2021   07:14:33  (  46.22,  86.65)   35.83                42