Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 8 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)
 08/17/2025   04:10:56   (  -0.02, 140.75) (  -0.56, 138.28)  282.13                80
 08/18/2025   03:54:52   (   0.02, 140.76) (   0.47, 142.80)  233.26                80
 08/19/2025   16:16:39   (  -0.01, 140.76) (   0.74, 137.54)  367.57                80
 08/20/2025   15:55:15   (  -0.01, 140.76) (  -0.29, 142.07)  149.09                80
 08/22/2025   04:17:11   (   0.00, 140.75) (  -0.86, 136.76)  454.07                80
 08/23/2025   04:01:06   (  -0.00, 140.74) (   0.11, 141.30)   63.47                80
 08/25/2025   16:04:09   (   0.00, 140.71) (   0.01, 140.55)   17.50                80
 08/28/2025   04:04:40   (  -0.00, 140.67) (  -0.18, 139.78)  100.59                80
 08/29/2025   03:48:35   (  -0.00, 140.65) (   0.80, 144.32)  417.98                80