Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2023 4 28.  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)
 04/30/2023   12:36:01   ( -72.99, 171.53) 04/30/2023   12:36:55  ( -73.00, 171.60)    2.72                54
 04/30/2023   13:26:46   (  72.90, -20.97) 04/30/2023   13:26:22  (  72.91, -20.94)    2.01                24
 05/03/2023   04:03:09   (  72.96, 119.84) 05/03/2023   04:03:55  (  72.98, 119.80)    2.80                46
 05/03/2023   04:53:53   ( -72.92, -72.76) 05/03/2023   04:53:24  ( -72.91, -72.69)    2.27                29
 05/05/2023   19:30:15   ( -72.98,  68.04) 05/05/2023   19:30:56  ( -72.96,  67.99)    3.25                41
 05/05/2023   20:21:00   (  72.91,-124.48) 05/05/2023   20:20:22  (  72.91,-124.45)    1.49                38
 05/08/2023   10:57:23   (  72.99,  16.28) 05/08/2023   10:57:54  (  72.98,  16.29)    0.98                31
 05/08/2023   11:48:06   ( -72.89,-176.19) 05/08/2023   11:47:23  ( -72.92,-176.19)    3.72                43
 05/11/2023   02:24:29   ( -72.98, -35.43) 05/11/2023   02:24:55  ( -72.97, -35.50)    2.71                26
 05/11/2023   03:15:14   (  72.91, 132.02) 05/11/2023   03:14:21  (  72.92, 132.05)    1.00                53