Commuters are advised to plan for up to 30 minutes of additional travel time due to the service adjustments, which are meant to support works ahead of the opening of the full Circle Line loop. SINGAPORE: Train services on the Circle Line (CCL) will end earlier and start later on selected days between Sep 5 and Dec 28 to prepare for the opening of the complete CCL loop in the first half of next year. Services will end earlier at 11pm on Fridays and Saturdays and start later at 9am on Saturdays