Simultaneous Nadir Overpasses (SNOs) between NPP and GCOM-C
TLE Epoch: 2021 12 9.  Predictions up to the next  14.0 days:

     Date     Time(NPP) NPP Lat/Lon Date Time(GCOM-C) GCOM-C Lat/Lon    Distance(km)  Time Diff(sec)
 12/20/2021   11:44:12   ( -69.56,-178.81) 12/20/2021   11:45:22  ( -69.49,-177.17)   64.13                70
 12/20/2021   12:34:47   (  68.97, -10.66) 12/20/2021   12:35:59  (  68.95, -10.53)    5.22                72
 12/20/2021   13:25:29   ( -68.88, 156.78) 12/20/2021   13:26:30  ( -68.91, 156.78)    2.61                61
 12/20/2021   14:16:15   (  68.87, -35.90) 12/20/2021   14:16:58  (  68.85, -35.91)    2.62                43
 12/20/2021   15:06:58   ( -68.84, 131.46) 12/20/2021   15:07:28  ( -68.85, 131.47)    1.63                30
 12/20/2021   15:57:44   (  68.83, -61.22) 12/20/2021   15:57:55  (  68.85, -61.15)    3.56                11
 12/20/2021   16:48:27   ( -68.79, 106.14) 12/20/2021   16:48:26  ( -68.80, 106.16)    0.89                 1
 12/20/2021   17:39:12   (  68.73, -86.46) 12/20/2021   17:38:54  (  68.74, -86.53)    3.13                18
 12/20/2021   18:29:56   ( -68.75,  80.83) 12/20/2021   18:29:24  ( -68.75,  80.85)    1.14                32
 12/20/2021   19:20:41   (  68.69,-111.78) 12/20/2021   19:19:52  (  68.69,-111.84)    2.51                49
 12/20/2021   20:11:25   ( -68.71,  55.51) 12/20/2021   20:10:22  ( -68.69,  55.55)    2.05                63
 12/20/2021   21:02:06   (  68.43,-136.81) 12/20/2021   21:00:53  (  68.47,-137.36)   22.91                73
 12/20/2021   21:52:41   ( -67.97,  31.09) 12/20/2021   21:51:32  ( -67.99,  29.41)   70.19                69