Progress Issue name Date   (Japan Standard Time) Scheduled Regular Maintenance 3/15/11 12:50 to 12.55 p.m. about one or two minutes. Scheduled Regular Maintenance 2/15/11 12:50 to 12:55 p.m. about one or two minutes. Scheduled Regular Maintenance 1/14/11 12:50 to 12:55 p.m. about one or two minutes. Scheduled Regular Maintenance 12/15/10 12:50 to 12.55 p.m. about one or two minutes. Scheduled Regular Maintenance 11/15/10 12:50 to 12:55 p.m. about one or two minutes. Scheduled Regular Maintenance 10/15/10 12:50 to 12.55 p.m. about one or two minutes. Scheduled Regular Maintenance 9/15/10 12:50 to 12:55 p.m. about one or two minutes. Completed Revising the Certificates 7/20/10 12:30 to 12:55 p.m. about twentyfive minutes. Completed    Regular Maintenance    7/23/09 10:00 to 10:05 a.m. and 14:00 to 14:05 p.m. about one or two minutes.             Completed Regular Maintenance 1/29/09 5:02 a.m. about one minutes. Completed Leap Second and Maintenance 1/1/09 05:00 a.m.through 1/2/09 0:00 a.m. Completed Regular Maintenance 7/9/06 09:00 a.m.through 7/9/06 03:00 p.m. Completed Leap Second Maintenance 1/1/06 07:00 a.m.through 1/1/06 01:00 p.m. Completed Regular Maintenance 10/30/05 09:00 a.m.through 10/30/05 06:00 p.m. Completed Regular Maintenance 2/11/05 09:00 a.m.through 2/11/05 05:00 p.m.