Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 5 10.  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   (  70.94,-158.64) 05/11/2021   22:23:36  (  71.00,-161.08)   89.05                67
 05/11/2021   23:14:27   ( -70.06,   7.69) 05/11/2021   23:14:02  ( -70.07,   7.73)    1.67                25
 05/12/2021   00:03:54   (  69.96, 175.19) 05/12/2021   00:04:46  (  69.95, 175.22)    1.14                52
 05/14/2021   14:41:28   (  70.17, -43.91) 05/14/2021   14:40:17  (  70.14, -43.93)    3.09                71
 05/14/2021   15:30:58   ( -70.06, 123.57) 05/14/2021   15:30:59  ( -70.05, 123.53)    2.41                 1
 05/14/2021   16:20:28   (  69.79, -69.16) 05/14/2021   16:21:40  (  69.77, -68.75)   15.98                72
 05/17/2021   06:58:00   (  70.11,  71.88) 05/17/2021   06:57:14  (  70.13,  71.86)    2.14                46
 05/17/2021   07:47:29   ( -70.00,-120.63) 05/17/2021   07:47:55  ( -70.03,-120.67)    2.72                26
 05/19/2021   22:24:49   ( -70.97,  21.40) 05/19/2021   22:23:42  ( -71.05,  18.82)   93.99                67
 05/19/2021   23:14:31   (  70.04,-172.34) 05/19/2021   23:14:09  (  70.06,-172.28)    2.84                22
 05/20/2021   00:04:01   ( -69.94,  -4.85) 05/20/2021   00:04:51  ( -69.95,  -4.80)    2.13                50
 05/22/2021   14:41:35   ( -70.14, 136.04) 05/22/2021   14:40:22  ( -70.15, 136.04)    0.46                73
 05/22/2021   15:31:02   (  70.03, -56.48) 05/22/2021   15:31:06  (  70.05, -56.49)    1.96                 4
 05/22/2021   16:20:34   ( -69.82, 110.86) 05/22/2021   16:21:46  ( -69.83, 111.15)   10.95                72