Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 7 11.  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)
 07/12/2021   06:08:35   (  70.99,  85.58) 07/12/2021   06:07:29  (  71.04,  82.94)   95.92                66
 07/12/2021   06:58:20   ( -70.05,-108.18) 07/12/2021   06:57:54  ( -70.06,-108.17)    0.86                26
 07/12/2021   07:47:47   (  69.95,  59.32) 07/12/2021   07:48:38  (  69.94,  59.32)    1.80                51
 07/14/2021   22:25:20   (  70.12,-159.84) 07/14/2021   22:24:09  (  70.14,-159.84)    1.88                71
 07/14/2021   23:14:50   ( -70.01,   7.64) 07/14/2021   23:14:50  ( -70.00,   7.69)    2.51                 0
 07/15/2021   00:04:20   (  69.74, 174.91) 07/15/2021   00:05:31  (  69.71, 175.42)   20.05                71
 07/17/2021   14:41:50   (  70.06, -44.03) 07/17/2021   14:41:05  (  70.07, -43.97)    2.42                45
 07/17/2021   15:31:20   ( -69.96, 123.45) 07/17/2021   15:31:47  ( -69.98, 123.48)    3.15                27
 07/20/2021   06:08:39   ( -70.82, -94.67) 07/20/2021   06:07:31  ( -70.91, -96.86)   80.56                68
 07/20/2021   06:58:18   (  70.06,  71.84) 07/20/2021   06:58:01  (  70.06,  71.80)    1.63                17
 07/20/2021   07:47:48   ( -69.96,-120.67) 07/20/2021   07:48:43  ( -69.97,-120.74)    3.28                55
 07/22/2021   22:25:21   ( -70.11,  20.16) 07/22/2021   22:24:13  ( -70.12,  20.18)    1.14                68
 07/22/2021   23:14:48   (  69.99,-172.36) 07/22/2021   23:14:57  (  70.00,-172.34)    1.32                 9
 07/23/2021   00:04:23   ( -69.62,  -5.25) 07/23/2021   00:05:34  ( -69.64,  -4.49)   29.57                71