Simultaneous Nadir Overpasses (SNOs) between NPP and GCOM-C
TLE Epoch: 2021 12 16.  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   ( -69.59,-178.84) 12/20/2021   11:45:21  ( -69.52,-177.13)   66.84                69
 12/20/2021   12:34:46   (  68.93, -10.61) 12/20/2021   12:35:59  (  68.93, -10.56)    2.02                73
 12/20/2021   13:25:29   ( -68.91, 156.74) 12/20/2021   13:26:30  ( -68.88, 156.74)    2.85                61
 12/20/2021   14:16:15   (  68.89, -35.92) 12/20/2021   14:16:57  (  68.88, -35.87)    2.23                42
 12/20/2021   15:06:57   ( -68.81, 131.50) 12/20/2021   15:07:28  ( -68.83, 131.43)    3.35                31
 12/20/2021   15:57:44   (  68.84, -61.24) 12/20/2021   15:57:55  (  68.83, -61.18)    2.88                11
 12/20/2021   16:48:26   ( -68.77, 106.18) 12/20/2021   16:48:26  ( -68.77, 106.13)    2.54                 0
 12/20/2021   17:39:12   (  68.74, -86.48) 12/20/2021   17:38:53  (  68.78, -86.49)    3.45                19
 12/20/2021   18:29:55   ( -68.72,  80.87) 12/20/2021   18:29:24  ( -68.72,  80.82)    1.97                31
 12/20/2021   19:20:41   (  68.70,-111.80) 12/20/2021   19:19:51  (  68.72,-111.79)    2.42                50
 12/20/2021   20:11:24   ( -68.68,  55.55) 12/20/2021   20:10:22  ( -68.67,  55.51)    1.88                62
 12/20/2021   21:02:06   (  68.44,-136.83) 12/20/2021   21:00:53  (  68.45,-137.38)   22.55                73
 12/20/2021   21:52:41   ( -67.99,  31.06) 12/20/2021   21:51:31  ( -68.02,  29.45)   67.46                70