Among the reasons given by those who oppose the use of Common Era notation is that it is selective as other aspects of the Western calendar have origins in various belief systems ( e. g., January is named for Janus ), Style guides for academic texts on religion generally prefer BCE / CE to BC / AD.

* Janus ( mythology ), the two-faced Roman god of gates, doors, doorways, beginnings, and endings

* Janus ( moon ), a moon of Saturn

* Janus ( simulation ), a military combat simulation first developed in the late 1970s by the Lawrence Livermore National Laboratory's Combat Simulation Laboratory

* Samantha Womack ( born 1972 ), English actress, formerly Samantha Janus

* Janus ( programming language ), more than one programming language

* Janus ( DRM ), a Microsoft Digital Rights Management platform

* Janus ( musical project ), German darkwave musical project established 1995

* Janus ( American band ), hard rock band, established mid 90s in Chicago, Illinois

* Janus ( TV series ), A television series created by the Australian Broadcasting Commission with two story lines: the criminal family being prosecuted and the police / judicial process

* Janus ( Warehouse 13 ), an ancient magical coin artifact of the Roman god Janus that can erase a past life memory of a person to start a new life.

* Janus ( Marvel Comics ), Marvel Comics character

* Janus ( science fiction magazine ), a feminist science fiction magazine

* In In Nomine ( role-playing game ), Janus is the Archangel of the Wind

* Janus Lake ( Ontario ), Canada

* Janus Lake ( Washington ), Snohomish County, Washington

* Mount Janus ( Newfoundland ), Newfoundland and Labrador, Canada

* Mount Janus ( Svalbard ), Norway

If a declaration of war ensues, the fetial calls upon Jupiter, Juno ( or Janus ), Quirinus, and the heavenly, earthly and chthonic gods as witnesses of any potential violation of the ius.

* Janus Kamban ( 1913 – 2009 ), sculptor.

In the light of this theology it is noteworthy that Vesta is always invoked as the last in all ritual formulas concerning one or more gods ( Vesta extrema ), while Janus, the god of beginnings and passages, associated with Heaven, is always invoked at the beginning.

** The above two albums have been reissued in many forms, including by Janus Records as the two-album set, Razzle-Dazzle ( Janus 7003 ), a numerous releases on the Pickwick and Hallmark labels.

In general, Janus is at the origin of time as the guardian of the gates of Heaven: Jupiter himself moves forth and back because of Janus's working.

However Janus was the protector of doors, gates and roadways in general, as is shown by his two symbols, the key and the staff.

While Janus sometimes is named belliger and sometimes pacificus in accord with his general function of beginner, he is mentioned as Janus Quirinus in relation to the closing of the rites of March at the end of the month together with Pax, Salus and Concordia: This feature is a reflection of the aspect of Janus Quirinus which stresses the quirinal function of bringing peace back and the hope of soldiers for a victorious return.

It is a noteworthy curiosity that the opening of the Janus was perhaps the last act connected to the ancient religion in Rome: Procopius writes that in 536 CE, during the Gothic War, while general Belisarius was under siege in Rome, at night somebody opened the Janus Geminus stealthily, which had long stayed closed since 390, year on which Theodosius I's edict banned the ancient cults.

Kazaa and FastTrack were originally created and developed by Estonian programmers from BlueMoon Interactive and sold to Niklas Zennström and Janus Friis ( who were later to create Skype and later still Joost and Rdio ).

The Ancient scientist Janus developed time travel technology, leading to Elizabeth Weir using it to travel back to Atlantis 10, 000 years previously, and to a column containing a history of future events on the Milky Way planet ruled by Harry Maybourne.

The concept of holon, however, is closely integrated in " Janus " with the theory of complex systems as was developed by Ludwig von Bertalanffy and Herbert Simon, both well known investigators and friends of Koestler.

In Janus: A Summing Up ( 1978 ) Koestler continues the theories developed in " The Ghost in the Machine " and further elaborates on the concept of holarchy.

The Skype software was developed by Estonians Ahti Heinla, Priit Kasesalu and Jaan Tallinn, who together with Janus and Niklas were also behind the peer-to-peer file sharing software Kazaa.

The A Ring's outer edge is maintained by a destabilizing 7: 6 resonance with the moon Janus.

However, now it is known that the outer edge of the ring is instead maintained by a 7: 6 orbital resonance with the larger but more distant moons Janus and Epimetheus.

Romans and Greek authors maintained Janus was an exclusively Roman god.

* Zündapp Janus, a bubble car model by Zündapp

* HMS Janus, a name used by British naval ships

*" Janus ", a song from the album Out and About with the Gone Jackals by hard rock group The Gone Jackals

*" Janus ", a song from the album Inner Journeys: Myth + Legends by Cusco

* Janus: A Summing Up, a book by Arthur Koestler

* Janus, a short story by Ann Beattie

* Janus, a French poetry magazine published in Paris by Elliott Stein from 1950 to 1961

The pre-1948 B-pictures from Pine-Thomas Productions were also sold off to TV syndicators before the MCA deal, as was Paramount's Bulldog Drummond series, the latter of which is now owned by Janus Films.

" Along that same thought, Arthur Koestler stated, " it is the synergistic effects produced by wholes that are the very cause of the evolution of complexity in nature " and used the metaphor of Janus ( a symbol of the unity underlying complements like open / shut, peace / war ) to illustrate how the two perspectives ( strong or holistic vs. weak or reductionistic ) should be treated as perspectives, not exclusives, and should work together to address the issues of emergence.

The dates of his festivals support the same conclusion: they fall on January 1, March 7 and May 21, the first date being the recurrence of the Agonalia ( dedicated to Janus and celebrated by the king with the sacrifice of a ram ).

This festival, however, marked the end of the year and was linked to time more directly than to space ( as attested by Augustine's apologia on the role of Janus with respect to endings ).

After selling it to Niklas Zennström from Sweden and Janus Friis from Denmark, it was introduced in March 2001 by their Dutch company Consumer Empowerment.

** Perfect Dark: Janus ' Tears by Eric Trautmann ( 2007 )

* 1971-Rock Around the Country ( Sonet 623 ); issued in North America by GNP-Crescendo ( LP 2097 ) and as Travelin ' Band on Janus ( JLS 3035 )

In the schema presented by Martianus Capella, the Ianitores terrestres are placed in region 16 among deities of the lowest ranks, while Janus, the divine doorkeeper par excellence, is placed in region 1.

In the Fasti of Ovid, the nymph Cranaë is raped by Janus, a god otherwise portrayed by the poet as avuncular and wise.