Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2020 4 15.  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)
 04/17/2020   07:33:41   ( -69.30,-114.86) 04/17/2020   07:34:52  ( -69.22,-113.95)   37.34                71
 04/17/2020   08:24:17   (  68.78,  53.17) 04/17/2020   08:24:25  (  68.78,  53.13)    1.67                 8
 04/17/2020   09:14:58   ( -68.66,-139.35) 04/17/2020   09:13:55  ( -68.66,-139.37)    1.01                63
 04/19/2020   23:50:07   ( -69.41,   0.90) 04/19/2020   23:51:17  ( -69.33,   2.10)   47.85                70
 04/20/2020   00:40:41   (  68.78, 169.08) 04/20/2020   00:40:52  (  68.78, 169.03)    2.07                11
 04/20/2020   01:31:22   ( -68.66, -23.44) 04/20/2020   01:30:22  ( -68.67, -23.47)    1.83                60
 04/22/2020   16:06:33   ( -69.52, 116.65) 04/22/2020   16:07:42  ( -69.45, 118.14)   58.64                69
 04/22/2020   16:57:05   (  68.78, -75.01) 04/22/2020   16:57:19  (  68.78, -75.08)    2.65                14
 04/22/2020   17:47:46   ( -68.66,  92.47) 04/22/2020   17:46:49  ( -68.68,  92.42)    2.37                57
 04/25/2020   08:22:58   ( -69.63,-127.60) 04/25/2020   08:24:07  ( -69.51,-125.89)   67.72                69
 04/25/2020   09:13:29   (  68.84,  40.82) 04/25/2020   09:13:44  (  68.84,  40.88)    2.48                15
 04/25/2020   10:04:09   ( -68.67,-151.63) 04/25/2020   10:03:15  ( -68.68,-151.69)    2.61                54
 04/28/2020   00:39:24   ( -69.74, -11.86) 04/28/2020   00:40:32  ( -69.61,  -9.86)   78.56                68
 04/28/2020   01:29:53   (  68.84, 156.72) 04/28/2020   01:30:11  (  68.83, 156.77)    2.04                18
 04/28/2020   02:20:33   ( -68.67, -35.73) 04/28/2020   02:19:42  ( -68.68, -35.80)    2.74                51