Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 9 18.  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)
 09/20/2021   01:08:47   ( -64.80, -11.11) 09/20/2021   01:09:01  ( -64.81, -11.15)    1.74                14
 09/20/2021   01:57:46   (  58.80, 161.01) 09/20/2021   01:56:45  (  58.81, 160.97)    2.09                61
 09/22/2021   17:25:35   ( -66.50, 103.06) 09/22/2021   17:26:00  ( -66.50, 103.10)    1.81                25
 09/22/2021   18:14:39   (  60.84, -84.48) 09/22/2021   18:13:49  (  60.84, -84.49)    0.27                50
 09/25/2021   09:42:01   ( -66.95,-141.49) 09/25/2021   09:42:38  ( -66.95,-141.49)    0.12                37
 09/25/2021   10:31:28   (  62.58,  30.09) 09/25/2021   10:30:49  (  62.58,  30.11)    1.37                39
 09/28/2021   01:58:25   ( -67.28, -25.94) 09/28/2021   01:59:14  ( -67.29, -25.99)    2.48                49
 09/28/2021   02:47:52   (  62.93, 145.74) 09/28/2021   02:47:25  (  62.94, 145.71)    1.88                27
 09/30/2021   18:15:04   ( -68.42,  88.58) 09/30/2021   18:16:04  ( -68.43,  88.58)    0.43                60