# Intl.DateTimeFormat() constructor — Date-time component options

> weekday : The representation of the weekday. Possible values are: "long" : E.g., Thursday "short" : E.g., Thu "narrow" : E.g., T. Two weekdays may have the same narrow style for some locales (e.g., both Tuesday's and Thursday's narrow styles are T in the en-US locale). era : The representation of th

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- Updated: `2026-08-16T09:32:14.507783+00:00`
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weekday : The representation of the weekday. Possible values are: "long" : E.g., Thursday "short" : E.g., Thu "narrow" : E.g., T. Two weekdays may have the same narrow style for some locales (e.g., both Tuesday's and Thursday's narrow styles are T in the en-US locale). era : The representation of the era. Possible values are: "long" : E.g., Anno Domini "short" : E.g., AD "narrow" : E.g., A year : The representation of the year. Possible values are "numeric" and "2-digit". month : The representation of the month. Possible values are: "numeric" : E.g., 3 "2-digit" : E.g., 03 "long" : E.g., March "short" : E.g., Mar "narrow" : E.g., M. Two months may have the same narrow style for some locales (e.g., both March's and May's narrow styles are M in the en-US locale). day : The representation of the day. Possible values are "numeric" and "2-digit". dayPeriod : The formatting style used for day periods like "in the morning", "am", "noon", "n" etc. Possible values are "narrow", "short", and "long".

hour : The representation of the hour. Possible values are "numeric" and "2-digit". minute : The representation of the minute. Possible values are "numeric" and "2-digit". second : The representation of the second. Possible values are "numeric" and "2-digit". fractionalSecondDigits : The number of digits used to represent fractions of a second (any additional digits are truncated). Possible values are from 1 to 3. timeZoneName : The localized representation of the time zone name. Possible values are: "long" : Long localized form (e.g., Pacific Standard Time, Nordamerikanische Westküsten-Normalzeit) "short" : Short localized form (e.g.: PST, GMT-8) "shortOffset" : Short localized GMT format (e.g., GMT-8) "longOffset" : Long localized GMT format (e.g., GMT-08:00) "shortGeneric" : Short generic non-location format (e.g.: PT, Los Angeles Zeit). "longGeneric" : Long generic non-location format (e.g.: Pacific Time, Nordamerikanische Westküstenzeit)

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