Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 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)
 05/11/2021   22:24:43   (  70.95,-158.62) 05/11/2021   22:23:36  (  70.99,-161.07)   88.88                67
 05/11/2021   23:14:27   ( -70.07,   7.71) 05/11/2021   23:14:02  ( -70.06,   7.75)    1.91                25
 05/12/2021   00:03:54   (  69.97, 175.21) 05/12/2021   00:04:46  (  69.94, 175.23)    3.17                52
 05/14/2021   14:41:29   (  70.13, -43.97) 05/14/2021   14:40:17  (  70.13, -43.92)    2.23                72
 05/14/2021   15:30:59   ( -70.02, 123.51) 05/14/2021   15:30:59  ( -70.04, 123.54)    2.58                 0
 05/14/2021   16:20:28   (  69.80, -69.15) 05/14/2021   16:21:40  (  69.76, -68.74)   16.43                72
 05/17/2021   06:57:59   (  70.12,  71.89) 05/17/2021   06:57:13  (  70.12,  71.87)    0.93                46
 05/17/2021   07:47:29   ( -70.01,-120.62) 05/17/2021   07:47:55  ( -70.02,-120.66)    1.50                26
 05/19/2021   22:24:49   ( -70.98,  21.42) 05/19/2021   22:23:42  ( -71.04,  18.83)   93.83                67
 05/19/2021   23:14:31   (  70.05,-172.32) 05/19/2021   23:14:09  (  70.05,-172.26)    2.35                22
 05/20/2021   00:04:01   ( -69.95,  -4.83) 05/20/2021   00:04:51  ( -69.95,  -4.79)    1.79                50
 05/22/2021   14:41:35   ( -70.15, 136.05) 05/22/2021   14:40:22  ( -70.14, 136.06)    1.47                73
 05/22/2021   15:31:02   (  70.04, -56.46) 05/22/2021   15:31:06  (  70.04, -56.48)    0.58                 4
 05/22/2021   16:20:34   ( -69.83, 110.87) 05/22/2021   16:21:46  ( -69.82, 111.16)   10.86                72