Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 12 23.  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   05:30:38   ( -77.92,-102.69) 01/02/2022   05:29:27  ( -77.94,-102.75)    2.75                71
 01/02/2022   06:21:24   (  77.95,  64.51) 01/02/2022   06:20:25  (  77.93,  64.45)    1.93                59
 01/02/2022   07:12:10   ( -77.94,-128.17) 01/02/2022   07:11:27  ( -77.95,-128.22)    1.33                43
 01/02/2022   08:02:56   (  77.97,  39.02) 01/02/2022   08:02:25  (  77.94,  38.98)    3.15                31
 01/02/2022   08:53:42   ( -77.96,-153.66) 01/02/2022   08:53:27  ( -77.95,-153.69)    1.39                15
 01/02/2022   09:44:27   (  77.95,  13.74) 01/02/2022   09:44:24  (  77.98,  13.74)    4.03                 3
 01/02/2022   10:35:14   ( -77.98,-179.14) 01/02/2022   10:35:27  ( -77.96,-179.16)    2.83                13
 01/02/2022   11:25:59   (  77.97, -11.74) 01/02/2022   11:26:24  (  77.99, -11.73)    2.42                25
 01/02/2022   12:16:45   ( -77.96, 155.58) 01/02/2022   12:17:26  ( -78.00, 155.59)    4.20                41
 01/02/2022   13:07:31   (  77.99, -37.23) 01/02/2022   13:08:24  (  77.99, -37.19)    1.16                53
 01/02/2022   13:58:17   ( -77.98, 130.09) 01/02/2022   13:59:26  ( -78.01, 130.12)    2.58                69
 01/02/2022   14:49:11   (  78.32, -64.46) 01/02/2022   14:50:17  (  78.26, -61.10)   76.18                66