Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 10 21.  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)
 10/21/2021   14:42:21   (  70.09, -44.06) 10/21/2021   14:41:57  (  70.09, -44.10)    1.59                24
 10/21/2021   15:31:51   ( -69.97, 123.41) 10/21/2021   15:32:39  ( -69.99, 123.36)    2.93                48
 10/24/2021   06:09:23   ( -70.14, -95.75) 10/24/2021   06:08:10  ( -70.13, -95.72)    1.19                73
 10/24/2021   06:58:50   (  70.04,  71.75) 10/24/2021   06:58:54  (  70.02,  71.76)    2.20                 4
 10/24/2021   07:48:22   ( -69.82,-120.93) 10/24/2021   07:49:34  ( -69.82,-120.62)   11.85                72
 10/26/2021   22:25:53   ( -70.09,  20.06) 10/26/2021   22:25:09  ( -70.12,  20.05)    3.49                44
 10/26/2021   23:15:20   (  69.99,-172.44) 10/26/2021   23:15:53  (  70.01,-172.47)    2.84                33
 10/29/2021   13:52:44   (  70.64, -30.89) 10/29/2021   13:51:35  (  70.69, -32.40)   55.80                69
 10/29/2021   14:42:23   ( -70.03, 135.86) 10/29/2021   14:42:07  ( -70.06, 135.91)    3.38                16
 10/29/2021   15:31:50   (  69.93, -56.65) 10/29/2021   15:32:51  (  69.95, -56.62)    2.91                61
 11/01/2021   06:09:22   (  70.13,  84.25) 11/01/2021   06:08:23  (  70.10,  84.28)    3.29                59
 11/01/2021   06:58:52   ( -70.03,-108.27) 11/01/2021   06:59:05  ( -70.00,-108.24)    2.96                13
 11/01/2021   07:48:30   (  69.31,  58.39) 11/01/2021   07:49:38  (  69.31,  60.08)   66.45                68
 11/03/2021   22:25:50   (  70.11,-159.90) 11/03/2021   22:25:21  (  70.10,-159.95)    2.35                29
 11/03/2021   23:15:20   ( -70.01,   7.59) 11/03/2021   23:16:03  ( -70.00,   7.52)    2.95                43