In Postbag from the Hedge issue 21, it was revealed that RuneScape's calendar has ten months. They are:
Month Number of days Real-world equivalent Details 1 Rintra 39 January 1 - February 8 Tied for 2nd longest month with Novtumber and Moevyeng on years with Moevyeng Day. 2 Moevyng 38/39 (leap day) February 9 - March 18 There is an additional day in the middle of Moevyng every four years, called Moevyng Day, similar to a leap day. 3 Bennath 32 March 19 - April 19 Bennath means "blessing" in Cornish. 2nd shortest month 4 Raktuber 34 April 20 - May 23 5 Pentember 38 May 24 - June 30 Named for its position as the fifth month. Penta is Greek for five. 6 Fentuary 31 July 1 - July 31 Only month to solely encompass an entire Gregorian month. Shortest month. 7 Septober 38 August 1 - September 7 Named for its position as the seventh month. Septum is Latin for seven. 8 Ire of Phyrrys 40 September 8 - October 17 Named after the apprentice of Scorpius, Phyrrys. Phyrrys began work on the calendar of RuneScape. Longest month. 9 Novtumber 39 October 18 - November 25 Named for its position as the ninth month. Novem is Latin for nine. 10 Wintumber 36 November 26 - December 31 Name after winter; Wintumber trees are most likely named after this month.
The total of days is 365 or 366, as with the real world. It is currently Year 169 in the Fifth Age. (Note that this does not appear to change over time within the storyline.)
- History, the history of RuneScape world, from the First Age up to the current Fifth Age.
- Fifth Age, a detailed guide on what happened during the current age.