Leap of imagination: how February 29 reminds us of our mysterious relationship with time and space
The Julian calendar had observed a leap year every four years, but this meant time had drifted out of alignment with the dates of celestial …
Gregory XIII: How religious need spurred the reformist pope to recalculate time 440 years ago
The early arrival of Easter because of the long Julian Calendar necessitated the formation of a new calendar
Update overdue: Why climate change should be integrated into crop calendars at the hyper local level
India still sows according to a calendar created on the weather of the 1990s, though rainfall and temperature patterns have seen a major shift
Oldest calendar
Calendar>> Archaeology• The UK
Apocalypse not now
There is much in serious Mayan scholarship to assuage fears about the world ending on December 21, 2012