Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 3 21.  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)
 03/22/2022   12:12:08   (  71.78,  -4.36) 03/22/2022   12:12:55  (  71.78,  -4.41)    2.00                47
 03/22/2022   13:02:50   ( -71.68, 163.14) 03/22/2022   13:02:24  ( -71.71, 163.11)    3.12                26
 03/25/2022   03:39:15   ( -71.82, -56.18) 03/25/2022   03:39:56  ( -71.81, -56.12)    2.62                41
 03/25/2022   04:30:00   (  71.70, 111.35) 03/25/2022   04:29:23  (  71.71, 111.36)    1.69                37
 03/27/2022   19:06:24   (  71.79,-107.90) 03/27/2022   19:06:55  (  71.80,-107.89)    0.93                31
 03/27/2022   19:57:06   ( -71.68,  59.62) 03/27/2022   19:56:25  ( -71.69,  59.56)    2.37                41
 03/30/2022   10:33:29   ( -71.77,-159.62) 03/30/2022   10:33:56  ( -71.77,-159.70)    2.89                27
 03/30/2022   11:24:15   (  71.71,   7.80) 03/30/2022   11:23:22  (  71.72,   7.86)    2.04                53
 04/02/2022   01:10:09   ( -72.68, -20.48) 04/02/2022   01:11:14  ( -72.59, -17.63)   95.14                65
 04/02/2022   02:00:38   (  71.76, 148.63) 04/02/2022   02:00:54  (  71.78, 148.58)    2.98                16
 04/02/2022   02:51:21   ( -71.69, -43.92) 04/02/2022   02:50:24  ( -71.68, -43.97)    2.28                57