Simultaneous Nadir Overpasses (SNOs) between NPP and LANDSAT-9
TLE Epoch: 2023 12 21.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(LANDSAT-9) LANDSAT-9 Lat/Lon    Distance(km)  Time Diff(sec)
 12/21/2023   06:32:47   ( -70.36,-102.16) 12/21/2023   06:33:58  ( -70.32,-101.69)   18.23                71
 12/21/2023   07:23:28   (  70.09,  65.58) 12/21/2023   07:23:28  (  70.05,  65.58)    3.61                 0
 12/21/2023   08:14:09   ( -69.95,-126.89) 12/21/2023   08:12:58  ( -69.94,-126.95)    2.65                71
 12/23/2023   22:49:33   ( -70.14,  13.99) 12/23/2023   22:50:30  ( -70.14,  13.94)    1.83                57
 12/23/2023   23:40:17   (  70.03,-178.54) 12/23/2023   23:39:57  (  70.04,-178.56)    1.47                20
 12/24/2023   00:30:47   ( -69.31, -10.17) 12/24/2023   00:29:38  ( -69.32, -11.91)   68.16                69
 12/26/2023   15:06:09   ( -70.14, 129.83) 12/26/2023   15:06:57  ( -70.16, 129.84)    2.00                48
 12/26/2023   15:56:53   (  70.05, -62.72) 12/26/2023   15:56:24  (  70.05, -62.66)    2.18                29
 12/29/2023   07:22:33   ( -70.16,-114.30) 12/29/2023   07:23:25  ( -70.13,-114.30)    3.10                52
 12/29/2023   08:13:16   (  70.03,  53.21) 12/29/2023   08:12:52  (  70.02,  53.19)    0.99                24
 12/29/2023   09:03:43   ( -69.16,-138.21) 12/29/2023   09:02:35  ( -69.20,-140.30)   82.55                68
 12/31/2023   23:38:44   ( -70.21,   1.59) 12/31/2023   23:39:51  ( -70.19,   1.66)    3.63                67
 01/01/2024   00:29:27   (  70.09, 169.08) 01/01/2024   00:29:18  (  70.07, 169.15)    2.97                 9
 01/01/2024   01:20:04   ( -69.76, -23.10) 01/01/2024   01:18:51  ( -69.80, -23.60)   19.74                73
 01/03/2024   15:54:57   ( -71.06, 116.22) 01/03/2024   15:56:03  ( -70.97, 118.72)   91.11                66
 01/03/2024   16:45:24   (  70.11, -74.95) 01/03/2024   16:45:44  (  70.09, -74.94)    2.75                20
 01/03/2024   17:36:05   ( -70.00,  92.55) 01/03/2024   17:35:14  ( -69.99,  92.55)    1.50                51