Simultaneous Nadir Overpasses (SNOs) between FY3D and AQUA
TLE Epoch: 2021 12 11.  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)
 12/11/2021   19:55:56   (  72.22,-121.83) 12/11/2021   19:56:35  (  72.21,-121.79)    1.58                39
 12/11/2021   20:45:49   ( -69.54,  50.02) 12/11/2021   20:45:11  ( -69.54,  50.03)    0.45                38
 12/14/2021   11:23:05   ( -72.25,-173.66) 12/14/2021   11:23:39  ( -72.24,-173.60)    2.03                34
 12/14/2021   12:13:04   (  69.76,  -2.09) 12/14/2021   12:12:21  (  69.76,  -2.05)    2.02                43
 12/17/2021   02:50:05   (  71.67, 135.67) 12/17/2021   02:50:35  (  71.68, 135.62)    2.00                30
 12/17/2021   03:40:11   ( -69.64, -53.68) 12/17/2021   03:39:23  ( -69.64, -53.64)    1.78                48
 12/19/2021   18:17:24   ( -72.15,  82.99) 12/19/2021   18:17:48  ( -72.14,  83.04)    2.16                24
 12/19/2021   19:07:07   (  68.83,-104.30) 12/19/2021   19:06:15  (  68.84,-104.36)    2.42                52
 12/22/2021   09:44:22   (  71.49,  32.45) 12/22/2021   09:44:42  (  71.50,  32.39)    2.53                20
 12/22/2021   10:34:25   ( -69.28,-156.71) 12/22/2021   10:33:27  ( -69.28,-156.69)    0.90                58
 12/25/2021   01:11:35   ( -71.71, -19.72) 12/25/2021   01:11:49  ( -71.71, -19.72)    0.06                14