Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 1 26.  Predictions up to the next  14.0 days:

     Date     Time(LANDSAT-8) LANDSAT-8 Lat/Lon Date Time(NPP) NPP Lat/Lon    Distance(km)  Time Diff(sec)
 01/27/2021   23:15:01   (  70.06,-172.35) 01/27/2021   23:14:17  (  70.06,-172.29)    2.16                44
 01/28/2021   00:04:31   ( -69.94,  -4.88) 01/28/2021   00:04:59  ( -69.96,  -4.82)    2.59                28
 01/30/2021   14:41:50   ( -70.86, 137.07) 01/30/2021   14:40:42  ( -70.88, 134.86)   80.72                68
 01/30/2021   15:31:30   (  70.05, -56.49) 01/30/2021   15:31:12  (  70.04, -56.50)    0.68                18
 01/30/2021   16:21:00   ( -69.93, 110.99) 01/30/2021   16:21:54  ( -69.94, 110.97)    1.32                54
 02/02/2021   06:58:32   ( -70.14,-108.12) 02/02/2021   06:57:23  ( -70.13,-108.18)    2.14                69
 02/02/2021   07:48:00   (  69.97,  59.29) 02/02/2021   07:48:06  (  69.98,  59.36)    2.84                 6
 02/02/2021   08:37:33   ( -69.70,-133.45) 02/02/2021   08:38:45  ( -69.72,-132.93)   20.36                72
 02/04/2021   23:15:02   ( -70.06,   7.65) 02/04/2021   23:14:17  ( -70.07,   7.69)    1.71                45
 02/05/2021   00:04:28   (  69.95, 175.14) 02/05/2021   00:05:00  (  69.97, 175.15)    2.00                32
 02/07/2021   14:41:49   (  70.74, -43.10) 02/07/2021   14:40:41  (  70.80, -45.02)   70.36                68
 02/07/2021   15:31:30   ( -70.04, 123.49) 02/07/2021   15:31:11  ( -70.06, 123.47)    2.61                19
 02/07/2021   16:20:57   (  69.92, -69.02) 02/07/2021   16:21:54  (  69.91, -68.99)    2.12                57