Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 4 12.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(TERRA) TERRA Lat/Lon    Distance(km)  Time Diff(sec)
 04/14/2020   15:17:16   ( -69.21, 129.36) 04/14/2020   15:18:27  ( -69.13, 130.05)   28.73                71
 04/14/2020   16:07:54   (  68.80, -62.76) 04/14/2020   16:07:58  (  68.80, -62.72)    1.54                 4
 04/14/2020   16:58:35   ( -68.67, 104.73) 04/14/2020   16:57:28  ( -68.69, 104.77)    2.41                67
 04/17/2020   07:33:42   ( -69.31,-114.87) 04/17/2020   07:34:53  ( -69.19,-113.98)   37.49                71
 04/17/2020   08:24:18   (  68.79,  53.16) 04/17/2020   08:24:25  (  68.80,  53.17)    1.37                 7
 04/17/2020   09:14:59   ( -68.67,-139.35) 04/17/2020   09:13:55  ( -68.69,-139.33)    2.97                64
 04/19/2020   23:50:07   ( -69.41,   0.90) 04/19/2020   23:51:17  ( -69.30,   2.05)   46.90                70
 04/20/2020   00:40:41   (  68.78, 169.08) 04/20/2020   00:40:51  (  68.80, 169.05)    1.88                10
 04/20/2020   01:31:22   ( -68.66, -23.44) 04/20/2020   01:30:21  ( -68.69, -23.45)    3.32                61
 04/22/2020   16:06:33   ( -69.51, 116.66) 04/22/2020   16:07:42  ( -69.40, 118.07)   56.48                69
 04/22/2020   16:57:05   (  68.77, -75.00) 04/22/2020   16:57:18  (  68.78, -75.08)    3.00                13
 04/22/2020   17:47:47   ( -68.70,  92.41) 04/22/2020   17:46:48  ( -68.68,  92.43)    3.13                59
 04/25/2020   08:22:58   ( -69.55,-127.50) 04/25/2020   08:24:07  ( -69.49,-125.91)   62.20                69
 04/25/2020   09:13:30   (  68.82,  40.84) 04/25/2020   09:13:44  (  68.82,  40.86)    0.88                14
 04/25/2020   10:04:11   ( -68.70,-151.68) 04/25/2020   10:03:14  ( -68.72,-151.63)    2.74                57