Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 9 15.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 09/15/2025   16:10:15   (  -0.03, 140.78) (   0.35, 139.09)  192.57                80
 09/16/2025   15:48:50   (  -0.03, 140.76) (  -0.65, 143.63)  325.98                80
 09/18/2025   04:10:45   (   0.04, 140.66) (  -0.51, 138.32)  267.35                80
 09/19/2025   03:54:41   (   0.03, 140.64) (   0.55, 142.85)  252.39                80
 09/20/2025   16:16:28   (  -0.04, 140.65) (   0.63, 137.58)  349.67                80
 09/21/2025   15:55:03   (  -0.04, 140.62) (  -0.37, 142.12)  170.27                80
 09/23/2025   04:16:58   (   0.04, 140.52) (  -0.78, 136.81)  421.88                80
 09/24/2025   04:00:52   (   0.04, 140.48) (   0.22, 141.35)   98.91                80
 09/26/2025   16:01:14   (  -0.03, 140.44) (  -0.06, 140.62)   19.43                80
 09/29/2025   04:04:24   (   0.04, 140.30) (  -0.08, 139.85)   51.76                80