Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2021 3 17.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 03/19/2021   07:15:59   (  70.93,  68.45) 03/19/2021   07:16:29  (  70.93,  68.41)    1.71                30
 03/19/2021   08:06:41   ( -70.83,-124.07) 03/19/2021   08:05:59  ( -70.82,-124.13)    2.80                42
 03/21/2021   23:32:20   (  70.97,-175.69) 03/21/2021   23:32:56  (  70.94,-175.69)    3.44                36
 03/22/2021   00:23:02   ( -70.87,  -8.20) 03/22/2021   00:22:25  ( -70.88,  -8.15)    2.15                37
 03/24/2021   15:48:39   (  70.96, -59.74) 03/24/2021   15:49:21  (  71.00, -59.73)    3.55                42
 03/24/2021   16:39:21   ( -70.86, 107.75) 03/24/2021   16:38:51  ( -70.89, 107.74)    2.95                30
 03/27/2021   08:05:00   (  71.01,  56.11) 03/27/2021   08:05:48  (  70.99,  56.15)    2.43                48
 03/27/2021   08:55:42   ( -70.90,-136.39) 03/27/2021   08:55:18  ( -70.88,-136.38)    1.89                24
 03/30/2021   00:21:20   (  71.00, 172.06) 03/30/2021   00:22:15  (  70.98, 172.02)    2.76                55
 03/30/2021   01:12:02   ( -70.89, -20.44) 03/30/2021   01:11:45  ( -70.88, -20.51)    2.92                17