Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2021 7 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)
 07/03/2021   08:49:04   (  78.21,  24.85) 07/03/2021   08:47:56  (  78.21,  22.23)   59.47                68
 07/03/2021   09:39:54   ( -78.43,-169.14) 07/03/2021   09:38:52  ( -78.41,-169.22)    3.38                62
 07/03/2021   10:30:39   (  78.44,  -1.87) 07/03/2021   10:29:50  (  78.44,  -1.80)    1.74                49
 07/03/2021   11:21:23   ( -78.44, 165.48) 07/03/2021   11:20:51  ( -78.46, 165.59)    3.23                32
 07/03/2021   12:12:08   (  78.45, -27.25) 07/03/2021   12:11:50  (  78.45, -27.23)    0.56                18
 07/03/2021   13:02:52   ( -78.44, 140.10) 07/03/2021   13:02:51  ( -78.47, 140.16)    3.56                 1
 07/03/2021   13:53:37   (  78.45, -52.64) 07/03/2021   13:53:50  (  78.46, -52.66)    1.10                13
 07/03/2021   14:44:22   ( -78.48, 114.49) 07/03/2021   14:44:52  ( -78.44, 114.51)    3.92                30
 07/03/2021   15:35:06   (  78.45, -78.02) 07/03/2021   15:35:50  (  78.47, -78.08)    2.39                44
 07/03/2021   16:25:51   ( -78.48,  89.11) 07/03/2021   16:26:52  ( -78.46,  89.08)    2.93                61
 07/03/2021   17:16:36   (  78.49,-103.63) 07/03/2021   17:17:50  (  78.48,-103.51)    3.06                74