Calculation on Microsoft Excel edit

To calculate the indiction in Microsoft Excel, use the formula =(Y+2)*mod15+1. CsikosLo (talk) 17:09, 2 October 2017 (UTC)Reply

So what's the name of a a 15-year cycle? An indiction? edit

The 8 Millennium Development Goals from 2000-2015, the 17#GlobalGoals - Sustainable Development Goals from 2015-2030; all have 15 year cycles. Seems to become quite popular these 15 year cycles. So what's the name of a a 15-year cycle? An indiction or - as per definition in this wikipedia article - is that just the name of any year in a 15 year cycle and there is no name for a 15 year cycle? Thy --SvenAERTS (talk) 10:30, 22 March 2019 (UTC)Reply

Both the cycle and the year within it is an "indiction". See AD 297 as the beginning of the first indiction cycle by Leo Depuypt (Wikipedia recently announced that JSTOR articles could now be accessed through Wikipedia but did not specify how). A few sources do refer to an "indiction cycle", for example Depuypt uses "first indiction cycle" in the title of his article and the AD 933 Coptic document he cites mentions a whole cycle, designated the "43rd [indiction] cycle", but most sources refer to an indiction as a year within a cycle, for example the "7th indiction". — Joe Kress (talk) 19:34, 22 March 2019 (UTC)Reply
WP:JSTOR specifies only active Wikipedia editors in good standing can have access to JSTOR and other databases. — Joe Kress (talk) 19:48, 22 March 2019 (UTC)Reply