Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 12 29.  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)
 12/29/2021   22:25:41   ( -70.18,  20.18) 12/29/2021   22:24:54  ( -70.19,  20.11)    3.48                47
 12/29/2021   23:15:09   (  70.02,-172.39) 12/29/2021   23:15:37  (  70.02,-172.32)    2.89                28
 01/01/2022   13:52:25   (  71.03, -30.29) 01/01/2022   13:51:19  (  71.08, -32.87)   93.32                66
 01/01/2022   14:42:10   ( -70.09, 135.95) 01/01/2022   14:41:44  ( -70.11, 136.02)    3.03                26
 01/01/2022   15:31:37   (  69.99, -56.55) 01/01/2022   15:32:28  (  69.99, -56.49)    2.47                51
 01/04/2022   06:09:06   (  70.22,  84.39) 01/04/2022   06:07:53  (  70.21,  84.32)    2.67                73
 01/04/2022   06:58:37   ( -70.06,-108.22) 01/04/2022   06:58:34  ( -70.07,-108.14)    3.24                 3
 01/04/2022   07:48:05   (  69.89,  59.20) 01/04/2022   07:49:17  (  69.90,  59.42)    8.38                72
 01/06/2022   22:25:34   (  70.17,-159.80) 01/06/2022   22:24:44  (  70.19,-159.85)    2.57                50
 01/06/2022   23:15:04   ( -70.07,   7.68) 01/06/2022   23:15:25  ( -70.04,   7.68)    2.34                21
 01/07/2022   00:04:47   (  69.07, 173.98) 01/07/2022   00:05:53  (  69.08, 176.39)   95.51                66
 01/09/2022   14:42:02   (  70.11, -43.99) 01/09/2022   14:41:34  (  70.11, -43.96)    1.52                28
 01/09/2022   15:31:32   ( -70.01, 123.49) 01/09/2022   15:32:16  ( -70.02, 123.50)    1.24                44
 01/12/2022   06:08:58   ( -70.43, -95.29) 01/12/2022   06:07:46  ( -70.46, -96.02)   27.34                72
 01/12/2022   06:58:29   (  70.10,  71.87) 01/12/2022   06:58:25  (  70.09,  71.86)    1.16                 4
 01/12/2022   07:47:59   ( -70.00,-120.64) 01/12/2022   07:49:07  ( -70.00,-120.68)    1.43                68