Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2017 4 15.  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)
 04/17/2017   14:41:19   (  70.18, -44.00) 04/17/2017   14:40:36  (  70.17, -43.97)    1.59                43
 04/17/2017   15:30:49   ( -70.06, 123.47) 04/17/2017   15:31:18  ( -70.07, 123.50)    1.35                29
 04/20/2017   06:08:09   ( -70.84, -94.78) 04/20/2017   06:07:00  ( -70.90, -96.69)   70.10                69
 04/20/2017   06:57:47   (  70.14,  71.82) 04/20/2017   06:57:31  (  70.12,  71.87)    2.70                16
 04/20/2017   07:47:17   ( -70.03,-120.70) 04/20/2017   07:48:13  ( -70.02,-120.66)    2.11                56
 04/22/2017   22:24:48   ( -70.21,  20.15) 04/22/2017   22:23:43  ( -70.23,  20.16)    2.57                65
 04/22/2017   23:14:15   (  70.10,-172.36) 04/22/2017   23:14:26  (  70.08,-172.29)    3.32                11
 04/23/2017   00:03:51   ( -69.66,  -5.33) 04/23/2017   00:05:02  ( -69.65,  -4.35)   38.13                71
 04/25/2017   14:41:15   ( -70.16, 135.97) 04/25/2017   14:40:37  ( -70.19, 136.00)    2.82                38
 04/25/2017   15:30:41   (  70.10, -56.47) 04/25/2017   15:31:21  (  70.09, -56.54)    3.30                40
 04/28/2017   06:08:07   (  70.54,  84.77) 04/28/2017   06:06:56  (  70.57,  83.84)   34.48                71
 04/28/2017   06:57:42   ( -70.17,-108.14) 04/28/2017   06:57:32  ( -70.14,-108.17)    2.72                10
 04/28/2017   07:47:09   (  70.05,  59.34) 04/28/2017   07:48:16  (  70.05,  59.29)    1.88                67