Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 11 1.  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)
 11/04/2021   05:22:40   ( -78.08,-101.98) 11/04/2021   05:21:27  ( -78.10,-102.00)    2.73                73
 11/04/2021   06:13:25   (  78.09,  65.29) 11/04/2021   06:12:27  (  78.10,  65.20)    2.24                58
 11/04/2021   07:04:10   ( -78.12,-127.58) 11/04/2021   07:03:27  ( -78.11,-127.46)    3.19                43
 11/04/2021   07:54:55   (  78.13,  39.68) 11/04/2021   07:54:27  (  78.10,  39.74)    3.67                28
 11/04/2021   08:45:39   ( -78.13,-152.97) 11/04/2021   08:45:27  ( -78.12,-152.91)    1.79                12
 11/04/2021   09:36:24   (  78.14,  14.29) 11/04/2021   09:36:27  (  78.11,  14.29)    3.08                 3
 11/04/2021   10:27:08   ( -78.13,-178.37) 11/04/2021   10:27:27  ( -78.13,-178.36)    0.54                19
 11/04/2021   11:17:53   (  78.14, -11.10) 11/04/2021   11:18:27  (  78.12, -11.17)    3.14                34
 11/04/2021   12:08:37   ( -78.14, 156.24) 11/04/2021   12:09:27  ( -78.14, 156.19)    1.18                50
 11/04/2021   12:59:22   (  78.15, -36.50) 11/04/2021   13:00:26  (  78.16, -36.40)    2.81                64
 11/04/2021   13:50:13   ( -78.41, 129.31) 11/04/2021   13:51:21  ( -78.36, 132.10)   62.79                68