Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 4 22.  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)
 04/22/2021   19:04:08   ( -46.11,  88.83) 04/22/2021   19:05:09  ( -46.16,  88.99)   13.54                61
 04/22/2021   19:55:10   (  46.98,-104.21) 04/22/2021   19:54:54  (  47.06,-103.73)   38.28                16
 04/25/2021   11:20:27   ( -46.07,-155.22) 04/25/2021   11:21:36  ( -46.07,-155.10)    9.57                69
 04/25/2021   12:11:20   (  46.42,  11.95) 04/25/2021   12:11:13  (  46.50,  12.37)   33.53                 7
 04/28/2021   03:39:53   ( -56.72, -44.42) 04/28/2021   03:41:06  ( -56.75, -44.05)   23.09                73
 04/28/2021   04:27:34   (  46.09, 128.01) 04/28/2021   04:27:36  (  46.18, 128.37)   29.16                 2
 04/30/2021   20:01:57   ( -75.20,  48.06) 04/30/2021   20:03:10  ( -75.43,  49.57)   50.18                73
 04/30/2021   20:43:52   (  46.06,-116.04) 04/30/2021   20:44:02  (  46.12,-115.72)   24.90                10
 04/30/2021   21:35:42   ( -49.97,  49.64) 04/30/2021   21:34:33  ( -50.11,  50.34)   52.53                69
 05/03/2021   12:24:04   ( -77.87,  63.77) 05/03/2021   12:25:17  ( -78.35,  61.60)   72.72                73
 05/03/2021   13:00:12   (  46.09,  -0.11) 05/03/2021   13:00:30  (  46.12,   0.16)   20.97                18