Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 12 25.  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   ( -77.93,-102.70) 01/02/2022   05:29:27  ( -77.94,-102.80)    2.45                71
 01/02/2022   06:21:24   (  77.95,  64.50) 01/02/2022   06:20:25  (  77.93,  64.41)    3.10                59
 01/02/2022   07:12:10   ( -77.95,-128.19) 01/02/2022   07:11:27  ( -77.94,-128.27)    1.98                43
 01/02/2022   08:02:56   (  77.97,  39.01) 01/02/2022   08:02:24  (  77.97,  39.16)    3.45                32
 01/02/2022   08:53:42   ( -77.97,-153.68) 01/02/2022   08:53:27  ( -77.95,-153.74)    2.78                15
 01/02/2022   09:44:27   (  77.95,  13.74) 01/02/2022   09:44:24  (  77.98,  13.70)    3.29                 3
 01/02/2022   10:35:14   ( -77.99,-179.16) 01/02/2022   10:35:26  ( -77.99,-178.99)    3.97                12
 01/02/2022   11:25:59   (  77.97, -11.75) 01/02/2022   11:26:24  (  77.98, -11.77)    1.58                25
 01/02/2022   12:16:45   ( -77.97, 155.56) 01/02/2022   12:17:26  ( -77.99, 155.54)    2.99                41
 01/02/2022   13:07:31   (  77.99, -37.24) 01/02/2022   13:08:24  (  77.99, -37.23)    0.13                53
 01/02/2022   13:58:17   ( -77.99, 130.08) 01/02/2022   13:59:26  ( -78.00, 130.07)    1.27                69
 01/02/2022   14:49:10   (  78.29, -64.24) 01/02/2022   14:50:17  (  78.25, -61.14)   70.23                67