Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 3 18.  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)
 03/19/2022   20:44:59   ( -71.82,  47.35) 03/19/2022   20:45:55  ( -71.83,  47.44)    3.51                56
 03/19/2022   21:35:44   (  71.69,-145.11) 03/19/2022   21:35:23  (  71.68,-145.17)    2.35                21
 03/19/2022   22:26:12   ( -70.86,  23.66) 03/19/2022   22:25:05  ( -70.92,  21.22)   88.76                67
 03/22/2022   12:12:08   (  71.77,  -4.34) 03/22/2022   12:12:55  (  71.79,  -4.40)    2.67                47
 03/22/2022   13:02:51   ( -71.72, 163.08) 03/22/2022   13:02:24  ( -71.72, 163.14)    2.18                27
 03/25/2022   03:39:15   ( -71.80, -56.15) 03/25/2022   03:39:56  ( -71.82, -56.10)    2.71                41
 03/25/2022   04:30:01   (  71.73, 111.28) 03/25/2022   04:29:23  (  71.72, 111.37)    3.57                38
 03/27/2022   19:06:23   (  71.77,-107.86) 03/27/2022   19:06:54  (  71.80,-107.88)    2.87                31
 03/27/2022   19:57:06   ( -71.71,  59.57) 03/27/2022   19:56:24  ( -71.69,  59.57)    2.45                42
 03/30/2022   10:33:30   ( -71.80,-159.67) 03/30/2022   10:33:55  ( -71.82,-159.61)    2.58                25
 03/30/2022   11:24:15   (  71.69,   7.84) 03/30/2022   11:23:22  (  71.71,   7.85)    1.68                53