Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2022 2 13.  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)
 02/13/2022   12:42:54   ( -71.72, 167.78) 02/13/2022   12:44:06  ( -71.69, 167.75)    2.95                72
 02/13/2022   13:33:39   (  71.62, -24.74) 02/13/2022   13:33:33  (  71.61, -24.75)    2.16                 6
 02/13/2022   14:24:17   ( -71.28, 143.18) 02/13/2022   14:23:05  ( -71.37, 142.50)   26.38                72
 02/16/2022   04:10:04   (  71.71, 116.02) 02/16/2022   04:11:06  (  71.70, 116.01)    1.46                62
 02/16/2022   05:00:47   ( -71.63, -76.51) 02/16/2022   05:00:35  ( -71.63, -76.47)    1.49                12
 02/16/2022   05:51:20   (  70.91,  92.06) 02/16/2022   05:50:12  (  71.00,  90.14)   70.23                68
 02/18/2022   19:37:12   ( -71.72,  64.24) 02/18/2022   19:38:08  ( -71.72,  64.27)    1.17                56
 02/18/2022   20:27:57   (  71.62,-128.27) 02/18/2022   20:27:35  (  71.62,-128.24)    0.92                22
 02/18/2022   21:18:25   ( -70.77,  40.54) 02/18/2022   21:17:18  ( -70.80,  38.08)   90.08                67
 02/21/2022   11:04:22   (  71.72,  12.48) 02/21/2022   11:05:08  (  71.69,  12.48)    2.84                46
 02/21/2022   11:55:05   ( -71.64, 179.94) 02/21/2022   11:54:37  ( -71.63,-179.99)    2.66                28
 02/24/2022   02:31:28   ( -71.69, -39.22) 02/24/2022   02:32:09  ( -71.69, -39.28)    2.12                41
 02/24/2022   03:22:13   (  71.58, 128.27) 02/24/2022   03:21:36  (  71.59, 128.19)    2.83                37
 02/26/2022   17:58:38   (  71.69, -90.99) 02/26/2022   17:59:08  (  71.69, -91.04)    1.56                30
 02/26/2022   18:49:21   ( -71.61,  76.46) 02/26/2022   18:48:37  ( -71.63,  76.51)    3.17                44