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Recognized category types
Type Example category BC(E)? Example output
Season 2001–02 FA Cup No
TV season Futurama (season 1) episodes
Office term (regular) MEPs 2004–2009 No
Office term (irregular) Wales AMs 2016–2021 No
Numerical range Taxonbars with 30–34 taxon IDs
Decade 2020s awards BC
Year 1999 in Scotland BC(E)
Year (auto-condensed) Candidates in the 2000 US presidential election
Year (|skip-gaps=yes) Nations at the 1980 World Championships in Athletics
Ordinal (temporal) 2nd-century rabbis BC(E)
Ordinal (numeric) 1st Lok Sabha members
Ordinal (word) First Dynasty of Egypt
Roman numeral Deputies of Legislature X of the Kingdom of Italy
Mixed decade 1760s in the Province of Quebec (1763–1791)
Mixed year 1778 establishments in the Province of Quebec (1763–1791)

Searching behavior

Multi-year seasons/office terms/numerical ranges are acceptable as long as the duration/range size remains constant, and no years/numbers are irregularly skipped. Irregular term lengths are acceptable, if a common year exists between them (e.g. 2000–20012001–2005). For categories with irregular ranges and gaps, see {{Irregular navseasoncats}}.

The length of each duration/range is automatically determined from the originating category name, up to and including 10 years. MOS:DATERANGE compliance is preferred, but some deviation is allowed and tracked. {{Category redirect}}s are followed, and tracked for either MOS contravention (to be corrected) or for navigational aid (no error). The gap size between successive durations/ranges is also automatically determined, up to and including 5 years if a surrounding category is found, and defaults to 0 (e.g. 1995–961996–97).

Automatically condensed year display is supported for presidential categories only (but can be easily expanded as needed), for gaps up to and including 5 years, and defaults to 1. To skip gaps up to 10–15 years (position-dependent) in any year categories, use |skip-gaps=yes.


  • Season/office term categories do not work for any years BC, which will be hidden, because no working examples were found.
  • Decade categories recognize BC, but not BCE, because no working examples were found.
  • Automatically condensed year display is supported for presidential categories only, due to their consistency. Use |skip-gaps=yes as desired elsewhere.
  • Automatically condensed Olympics display is not supported due to peculiarities; use {{Winter Olympics by year category navigation}}, etc., instead.
  • Ordinal words do not work above the ninety-ninth, because no higher working examples were found.
  • Where a fixed number is part of the prefix text, e.g. Chapter 11 bankruptcies, a non-breaking space may force the template to work. See [1], where {{title year}} skipped over "11" as part of a word rather than a discrete number. (This is no longer required in that example.)
  • General: for large, permanent gaps between successive categories, or when the base category name changes, use {{Category pair}} in addition to {{Navseasoncats}} on both sides of the gap/name change. Even if {{Navseasoncats}} is isolated, it has the benefit of confirming the absence of nearby categories to the reader or maintainer. "Permanent gaps" means gaps where it is confirmed that there is no data to be created, not just current gaps on Wikipedia.

Related CfDs


Typical usage
Specify a minimum and/or maximum year to display
To skip gaps in year categories
To not automatically follow {{Category redirect}}s
Exceptional cases

Testing & debugging

To test the output of the template on a particular category name, use the |testcase= parameter, and |testcasegap= if necessary:

To see all links produced, and what effect each has on their display, use |list-all-links=yes:

  1. Category:Nations at the 2006 World Athletics Championships (2006) (2006)
  2. Category:Nations at the 2007 World Athletics Championships (2007) (2007)
  3. Category:Nations at the 2008 World Athletics Championships (2008)
  4. Category:Nations at the 2009 World Athletics ChampionshipsCategory:Nations at the 2009 World Championships in Athletics (2009)
  5. Category:Nations at the 2011 World Athletics ChampionshipsCategory:Nations at the 2011 World Championships in Athletics (2011)
  6. Category:Nations at the 2015 World Athletics ChampionshipsCategory:Nations at the 2015 World Championships in Athletics (2015)
  7. Category:Nations at the 2017 World Athletics ChampionshipsCategory:Nations at the 2017 World Championships in Athletics (2017)
  8. Category:Nations at the 2019 World Athletics Championships (2019)
  9. Category:Nations at the 2020 World Athletics Championships (2020)
  10. Category:Nations at the 2021 World Athletics Championships (2021)
  • Technically, this is an inappropriate category for {{Navseasoncats}} placement, but it best shows the |list-all-links=yes behavior for all element variants (blue, red/grey, hidden, and redirect), and would otherwise display as:

Tracking categories

Purge this page to update the totals

If the template encounters an issue, it displays an error message and/or places the category into one or more of the following tracking categories:

Maintenance required

Maintenance possible

Tracking only

See also