Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 12 22.  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   ( -77.95,-102.84) 01/02/2022   05:29:27  ( -77.94,-102.76)    2.19                72
 01/02/2022   06:21:24   (  77.94,  64.56) 01/02/2022   06:20:25  (  77.93,  64.44)    2.72                59
 01/02/2022   07:12:10   ( -77.93,-128.12) 01/02/2022   07:11:27  ( -77.95,-128.23)    3.08                43
 01/02/2022   08:02:56   (  77.96,  39.07) 01/02/2022   08:02:25  (  77.94,  38.98)    2.97                31
 01/02/2022   08:53:42   ( -77.95,-153.60) 01/02/2022   08:53:27  ( -77.95,-153.69)    2.18                15
 01/02/2022   09:44:28   (  77.98,  13.59) 01/02/2022   09:44:24  (  77.98,  13.73)    3.37                 4
 01/02/2022   10:35:14   ( -77.97,-179.09) 01/02/2022   10:35:27  ( -77.96,-179.16)    2.42                13
 01/02/2022   11:25:59   (  77.96, -11.69) 01/02/2022   11:26:24  (  77.99, -11.73)    3.64                25
 01/02/2022   12:16:46   ( -77.99, 155.43) 01/02/2022   12:17:27  ( -77.96, 155.37)    3.58                41
 01/02/2022   13:07:31   (  77.98, -37.17) 01/02/2022   13:08:24  (  77.99, -37.20)    1.94                53
 01/02/2022   13:58:17   ( -77.97, 130.15) 01/02/2022   13:59:26  ( -78.01, 130.12)    3.79                69
 01/02/2022   14:49:10   (  78.27, -64.17) 01/02/2022   14:50:17  (  78.26, -61.10)   69.51                67