Pre-Scheduled MSF Service Interruptions

Regular maintenance is scheduled on the MSF-60 signal throughout the year. You may experience interruption of the service during these times. The current schedule (according to the National Physical Laboratory) appears below:

9 June 2011 from 10:00 BST to 14:00 BST
8 September 2011 from 10:00 BST to 14:00 BST
8 December 2011 from 10:00 UTC to 14:00 UTC
8 March 2012 from 10:00 UTC to 14:00 UTC
14 June 2012 from 10:00 BST to 14:00 BST
13 September 2012 from 10:00 BST to 14:00 BST
13 December 2012 from 10:00 UTC to 14:00 UTC
14 March 2013 from 10:00 UTC to 14:00 UTC
13 June 2013 from 10:00 10:00 BST to 14:00 BST
12 September 2013 from 10:00 BST to 14:00 BST
12 December 2013 from 10:00 UTC to 14:00 UTC

Please note that this schedule may be amended at any time, and NPL may announce additional ad-hoc maintenance as and when necessary.

MSF Unscheduled Breaks in the Service

Short unscheduled breaks in transmission occur occasionally in addition to the scheduled breaks for maintenance. NPL provides a recorded message service, tel: +44 20 8943 6493, which announces planned maintenance periods and, during working hours, prolonged unscheduled outages.