Simultaneous Nadir Overpasses (SNOs) between FY3D and NOAA-19
TLE Epoch: 2023 12 10.  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)
 12/11/2023   00:04:08   ( -76.05,  -5.43) 12/11/2023   00:02:57  ( -76.03,  -6.93)   40.41                71
 12/11/2023   00:54:59   (  76.24, 161.21) 12/11/2023   00:53:51  (  76.25, 161.14)    2.43                68
 12/11/2023   01:45:44   ( -76.27, -31.59) 12/11/2023   01:44:50  ( -76.28, -31.51)    2.18                54
 12/11/2023   02:36:31   (  76.27, 135.70) 12/11/2023   02:35:49  (  76.27, 135.74)    1.19                42
 12/11/2023   03:27:15   ( -76.26, -56.94) 12/11/2023   03:26:49  ( -76.26, -57.07)    3.49                26
 12/11/2023   04:18:02   (  76.27, 110.34) 12/11/2023   04:17:47  (  76.30, 110.34)    3.55                15
 12/11/2023   05:08:47   ( -76.30, -82.46) 12/11/2023   05:08:47  ( -76.28, -82.47)    1.96                 0
 12/11/2023   05:59:34   (  76.31,  84.83) 12/11/2023   05:59:46  (  76.28,  84.78)    3.05                12
 12/11/2023   06:50:18   ( -76.29,-107.81) 12/11/2023   06:50:45  ( -76.31,-107.86)    2.16                27
 12/11/2023   07:41:05   (  76.30,  59.47) 12/11/2023   07:41:44  (  76.31,  59.38)    2.56                39
 12/11/2023   08:31:50   ( -76.33,-133.33) 12/11/2023   08:32:43  ( -76.33,-133.26)    1.90                53
 12/11/2023   09:22:37   (  76.34,  33.96) 12/11/2023   09:23:42  (  76.33,  33.98)    1.00                65
 12/11/2023   10:13:26   ( -76.54,-159.52) 12/11/2023   10:14:37  ( -76.53,-157.97)   40.18                71