New Calendar Would Add Extra Week to DecemberPublication: National Geographic News Date: January 17, 2012 View Article
Wish you’d had an extra holiday week this year? If a proposed permanent calendar is adopted in the next few years, you’ll get one at the end of 2017.
This “leap week” would occur every five or six years under the proposed Hanke-Henry Permanent Calendar.
The occasional extra December week would keep the months in tune with the seasons in a calendar that would otherwise stay the same year after year after year.