Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 12 20.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(NOAA-19) NOAA-19 Lat/Lon    Distance(km)  Time Diff(sec)
 01/02/2022   05:30:39   ( -77.94,-102.78) 01/02/2022   05:29:27  ( -77.93,-102.81)    1.25                72
 01/02/2022   06:21:24   (  77.93,  64.61) 01/02/2022   06:20:24  (  77.96,  64.60)    3.68                60
 01/02/2022   07:12:11   ( -77.96,-128.27) 01/02/2022   07:11:27  ( -77.94,-128.28)    2.71                44
 01/02/2022   08:02:56   (  77.95,  39.13) 01/02/2022   08:02:24  (  77.97,  39.13)    2.03                32
 01/02/2022   08:53:42   ( -77.94,-153.54) 01/02/2022   08:53:26  ( -77.98,-153.53)    4.33                16
 01/02/2022   09:44:28   (  77.97,  13.64) 01/02/2022   09:44:24  (  77.97,  13.67)    0.70                 4
 01/02/2022   10:35:14   ( -77.96,-179.03) 01/02/2022   10:35:26  ( -77.99,-179.00)    2.69                12
 01/02/2022   11:26:00   (  77.99, -11.85) 01/02/2022   11:26:24  (  77.98, -11.80)    1.63                24
 01/02/2022   12:16:46   ( -77.98, 155.49) 01/02/2022   12:17:26  ( -77.99, 155.53)    1.29                40
 01/02/2022   13:07:32   (  78.01, -37.33) 01/02/2022   13:08:24  (  77.98, -37.27)    3.25                52
 01/02/2022   13:58:18   ( -78.00, 130.00) 01/02/2022   13:59:26  ( -78.00, 130.06)    1.44                68
 01/02/2022   14:49:10   (  78.26, -64.12) 01/02/2022   14:50:17  (  78.25, -61.17)   66.70                67