Simultaneous Nadir Overpasses (SNOs) between NOAA-21 and LANDSAT-8
TLE Epoch: 2025 4 17.  Predictions up to the next  14.0 days:

     Date     Time(NOAA-21) NOAA-21 Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 04/18/2025   22:36:26   (  70.18,-162.88) 04/18/2025   22:37:15  (  70.18,-162.96)    3.06                49
 04/18/2025   23:27:09   ( -70.11,   4.53) 04/18/2025   23:26:44  ( -70.12,   4.58)    2.18                25
 04/21/2025   14:53:16   (  70.17, -47.08) 04/21/2025   14:53:41  (  70.16, -47.11)    1.45                25
 04/21/2025   15:43:58   ( -70.05, 120.42) 04/21/2025   15:43:11  ( -70.04, 120.36)    2.26                47
 04/24/2025   06:19:26   ( -70.46, -99.05) 04/24/2025   06:20:37  ( -70.36, -98.57)   20.79                71
 04/24/2025   07:10:05   (  70.12,  68.79) 04/24/2025   07:10:06  (  70.14,  68.76)    3.35                 1
 04/24/2025   08:00:48   ( -70.05,-123.79) 04/24/2025   07:59:36  ( -70.03,-123.76)    2.09                72
 04/26/2025   22:36:11   ( -70.21,  17.13) 04/26/2025   22:37:04  ( -70.20,  17.09)    1.88                53
 04/26/2025   23:26:54   (  70.08,-175.36) 04/26/2025   23:26:31  (  70.09,-175.42)    2.60                23
 04/27/2025   00:17:22   ( -69.22,  -6.78) 04/27/2025   00:16:14  ( -69.26,  -8.92)   84.28                68
 04/29/2025   14:52:59   ( -70.18, 132.96) 04/29/2025   14:53:26  ( -70.21, 133.00)    3.19                27
 04/29/2025   15:43:42   (  70.06, -59.53) 04/29/2025   15:42:54  (  70.04, -59.59)    3.03                48