Simultaneous Nadir Overpasses (SNOs) between NPP and LANDSAT-9
TLE Epoch: 2023 4 9.  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)
 04/09/2023   04:53:25   ( -70.54, -77.18) 04/09/2023   04:54:36  ( -70.50, -76.75)   16.72                71
 04/09/2023   05:44:06   (  70.26,  90.58) 04/09/2023   05:44:06  (  70.23,  90.51)    3.45                 0
 04/09/2023   06:34:48   ( -70.18,-101.98) 04/09/2023   06:33:35  ( -70.17,-101.94)    1.40                73
 04/11/2023   21:10:18   ( -70.33,  38.93) 04/11/2023   21:11:06  ( -70.34,  38.91)    2.25                48
 04/11/2023   22:01:03   (  70.26,-153.65) 04/11/2023   22:00:33  (  70.24,-153.59)    2.50                30
 04/14/2023   12:36:45   (  71.05, -13.79) 04/14/2023   12:37:53  (  70.98, -11.88)   69.62                68
 04/14/2023   13:27:15   ( -70.33, 154.70) 04/14/2023   13:27:33  ( -70.32, 154.76)    2.55                18
 04/14/2023   14:17:59   (  70.21, -37.80) 04/14/2023   14:17:00  (  70.22, -37.75)    2.30                59
 04/17/2023   04:53:29   (  70.39, 103.07) 04/17/2023   04:54:30  (  70.38, 103.10)    1.14                61
 04/17/2023   05:44:11   ( -70.29, -89.47) 04/17/2023   05:44:00  ( -70.27, -89.42)    2.89                11
 04/17/2023   06:34:45   (  69.65,  78.82) 04/17/2023   06:33:35  (  69.72,  77.45)   53.80                70
 04/19/2023   21:10:24   (  70.36,-141.11) 04/19/2023   21:10:55  (  70.35,-141.06)    2.44                31
 04/19/2023   22:01:05   ( -70.21,  26.44) 04/19/2023   22:00:25  ( -70.24,  26.42)    3.34                40
 04/22/2023   12:36:40   ( -70.66, 166.87) 04/22/2023   12:37:51  ( -70.57, 167.51)   25.86                71
 04/22/2023   13:27:19   (  70.29, -25.23) 04/22/2023   13:27:21  (  70.29, -25.26)    1.11                 2
 04/22/2023   14:18:01   ( -70.20, 142.24) 04/22/2023   14:16:51  ( -70.18, 142.23)    1.47                70