Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 3 20.  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)
 03/21/2025   04:04:18   (  -0.02, 140.77) (  -0.20, 139.92)   96.90                80
 03/22/2025   03:48:13   (  -0.02, 140.77) (   0.80, 144.46)  419.56                80
 03/23/2025   16:09:59   (   0.02, 140.77) (   0.37, 139.19)  180.18                80
 03/24/2025   15:48:34   (   0.02, 140.77) (  -0.64, 143.73)  336.47                80
 03/26/2025   04:10:29   (  -0.03, 140.77) (  -0.56, 138.43)  267.53                80
 03/27/2025   03:54:23   (  -0.03, 140.77) (   0.45, 142.96)  249.84                80
 03/28/2025   16:16:10   (   0.03, 140.75) (   0.70, 137.69)  348.21                80
 03/29/2025   15:54:44   (   0.03, 140.74) (  -0.32, 142.22)  169.32                80
 03/31/2025   04:16:39   (  -0.03, 140.73) (  -0.90, 136.93)  433.73                80
 04/01/2025   04:00:33   (  -0.02, 140.72) (   0.13, 141.46)   84.23                80
 04/03/2025   16:00:53   (   0.03, 140.69) (   0.04, 140.74)    5.73                80