Simultaneous Nadir Overpasses (SNOs) between LANDSAT-8 and NPP
TLE Epoch: 2021 11 22.  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)
 11/22/2021   13:52:49   ( -70.16, 148.41) 11/22/2021   13:51:47  ( -70.18, 148.48)    3.32                62
 11/22/2021   14:42:16   (  70.06, -44.09) 11/22/2021   14:42:31  (  70.06, -44.02)    2.52                15
 11/22/2021   15:31:54   ( -69.51, 122.78) 11/22/2021   15:33:04  ( -69.50, 124.12)   51.96                70
 11/25/2021   06:09:19   ( -70.14, -95.74) 11/25/2021   06:08:39  ( -70.15, -95.70)    2.08                40
 11/25/2021   06:58:46   (  70.03,  71.75) 11/25/2021   06:59:23  (  70.03,  71.79)    1.68                37
 11/27/2021   21:36:08   (  70.76,-146.58) 11/27/2021   21:34:59  (  70.79,-148.25)   61.33                69
 11/27/2021   22:25:48   ( -70.11,  20.09) 11/27/2021   22:25:30  ( -70.12,  20.12)    1.75                18
 11/27/2021   23:15:15   (  70.00,-172.42) 11/27/2021   23:16:14  (  70.01,-172.39)    1.15                59
 11/30/2021   13:52:48   (  70.18, -31.57) 11/30/2021   13:51:40  (  70.19, -31.52)    2.24                68
 11/30/2021   14:42:18   ( -70.08, 135.92) 11/30/2021   14:42:22  ( -70.10, 135.93)    2.87                 4
 11/30/2021   15:31:50   (  69.69, -56.98) 11/30/2021   15:33:00  (  69.67, -56.11)   33.56                70
 12/03/2021   06:09:17   (  70.19,  84.32) 12/03/2021   06:08:32  (  70.17,  84.29)    2.27                45
 12/03/2021   06:58:47   ( -70.09,-108.18) 12/03/2021   06:59:14  ( -70.08,-108.26)    2.89                27
 12/05/2021   22:25:47   (  70.13,-159.87) 12/05/2021   22:25:24  (  70.15,-159.91)    2.74                23
 12/05/2021   23:15:17   ( -70.04,   7.62) 12/05/2021   23:16:05  ( -70.01,   7.63)    2.96                48