Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 7 18.  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)
 07/19/2025   15:55:13   (  -0.01, 140.76) (  -0.29, 142.08)  150.37                80
 07/21/2025   04:17:10   (   0.01, 140.76) (  -0.90, 136.77)  454.57                80
 07/22/2025   04:01:05   (   0.00, 140.76) (   0.11, 141.30)   61.54                80
 07/24/2025   16:04:08   (   0.00, 140.77) (   0.08, 140.57)   23.37                80
 07/25/2025   15:42:45   (   0.01, 140.76) (  -0.99, 145.09)  493.56                80
 07/27/2025   04:04:41   (  -0.01, 140.74) (  -0.24, 139.79)  109.32                80
 07/28/2025   03:48:37   (  -0.01, 140.73) (   0.77, 144.32)  408.26                80
 07/29/2025   16:10:25   (   0.01, 140.72) (   0.37, 139.04)  190.59                80
 07/30/2025   15:49:00   (   0.01, 140.70) (  -0.64, 143.57)  327.24                80
 08/01/2025   04:10:57   (  -0.01, 140.68) (  -0.57, 138.27)  274.37                80