Simultaneous Nadir Overpasses (SNOs) between FY3D and TERRA
TLE Epoch: 2019 4 25.  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)
 04/26/2019   22:55:02   (  68.89,-164.58) 04/26/2019   22:55:55  (  68.91,-164.53)    2.91                53
 04/26/2019   23:45:42   ( -68.74,   2.95) 04/26/2019   23:45:26  ( -68.74,   2.88)    2.72                16
 04/27/2019   00:36:13   (  67.91, 171.32) 04/27/2019   00:35:05  (  67.97, 169.60)   72.08                68
 04/29/2019   15:11:29   (  68.85, -48.65) 04/29/2019   15:12:25  (  68.87, -48.71)    3.19                56
 04/29/2019   16:02:10   ( -68.75, 118.81) 04/29/2019   16:01:55  ( -68.75, 118.78)    1.38                15
 04/29/2019   16:52:42   (  67.98, -72.89) 04/29/2019   16:51:33  (  68.03, -74.45)   65.18                69
 05/02/2019   07:27:57   (  68.86,  67.21) 05/02/2019   07:28:54  (  68.87,  67.17)    1.85                57
 05/02/2019   08:18:38   ( -68.76,-125.33) 05/02/2019   08:18:24  ( -68.76,-125.34)    0.69                14
 05/02/2019   09:09:11   (  68.05,  42.91) 05/02/2019   09:08:01  (  68.09,  41.50)   58.52                70
 05/04/2019   23:44:24   (  68.88,-176.93) 05/04/2019   23:45:22  (  68.87,-176.95)    1.70                58
 05/05/2019   00:35:05   ( -68.78,  -9.47) 05/05/2019   00:34:52  ( -68.76,  -9.46)    1.96                13
 05/05/2019   01:25:38   (  68.06, 158.77) 05/05/2019   01:24:28  (  68.15, 157.44)   55.67                70
 05/07/2019   16:00:52   (  68.89, -61.07) 05/07/2019   16:01:50  (  68.91, -61.02)    2.99                58
 05/07/2019   16:51:32   ( -68.74, 106.47) 05/07/2019   16:51:21  ( -68.75, 106.41)    2.91                11
 05/07/2019   17:42:07   (  68.13, -85.44) 05/07/2019   17:40:57  (  68.14, -86.69)   51.70                70