One other thing I thought of that is a fun bit of information, since we are talking about Orthodoxy and Creation.
The Byzantine numbering of years is dated not from the Birth of Christ, but rather from the Creation of Adam.
Even today, one will find tradtional Russian calendars in particular that name not only the number of years since the birth of Christ, but the number of years since the creation of Adam.
Part of this is because the oldest Typikon (a book that orders our liturgical worship) in continuous use is the Sabbaite Typikon (Jerusalem Typikon), which is used in Slavic countries, in the Jerusalem Patriarchate, and on Mt. Athos and in other traditional Greek monastic institutions.
The fixing of the date of Pascha (Easter) in the Typikon is based on a 532 year cycle (because the solar cycle is 19 years and the lunar cycle is 28 days). The date assigned to the creation of Adam (and thus the beginning of this cycle) is Friday, March 1, 5508 B.C.
Which of course puts us right now in the year 7514, which actually began last September 1. March (actually Nissan, which usually roughly coincides with March) was kept as the first month of the year amongst the Hebrews, and likewise amongst Christians until the Indiction of Constantine -- since then September 1 has been the first day of the liturgical year in the Orthodox Church, whereas the West has kept January 1 (the pre-Christian Roman Indiction date) as the first day of the year.
As another interesting point of tradition passed on through the years, there is a tradition that Eve ate of the fruit on March 25th at the 6th hour (i.e. noon) -- which means that Adam and Eve lasted less than a month in Paradise before their fall. There is also a tradition that the Virgin Mary received the visitation of the Archangel at noon on March 25th (9 months before the Nativity of Christ) -- creating a direct parallel between the "yes" of the first Eve in response to the temptation of the fallen angel Satan and the "yes" of the second Eve to the angel sent by God.
None of this has anything to do with anything we are discussing, and there are some competing traditions on various of these points within Orthodoxy, but it popped into my head... Couldn't help it! :-)