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description=Datetime formats;

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datetime, interoperability, formats, date, sponsored, by,

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datetime formats mastodon documentation what is mastodon using mastodon signing up for an account setting up your profile posting to your profile using the network features quoting other posts dealing with unwanted content promoting yourself and others set your preferences more settings using mastodon externally moving or leaving accounts official ios and android apps running your own server running mastodon preparing your machine installing from source configuring your environment configuring full text search installing optional features object storage onion services captcha single sign on setting up your new instance using the admin cli upgrading to a new release backing up your server migrating to a new machine scaling up your server moderation actions troubleshooting errors database index corruption webhooks roles developing mastodon apps getting started with the api playing with public data obtaining client app access logging in with an account libraries and implementations implementing quote posts implementing collections contributing to mastodon technical overview setting up a dev environment code structure routes security issues and responsible disclosure frontend guide components state management css and styling creating themes design tokens reference spec compliance activitypub webfinger security microformats oauth bearcaps rest api datetime formats guidelines and best practices oauth tokens oauth scopes rate limits api methods accounts blocks bookmarks domain_blocks endorsements favourites featured_tags filters follow_requests followed_tags mutes preferences reports suggestions tags admin accounts canonical_email_blocks dimensions domain_allows domain_blocks email_domain_blocks ip_blocks measures reports retention trends annual reports apps emails oauth async_refreshes collections grouped notifications health instance announcements custom_emojis directory trends notifications push oembed profile proofs search statuses media polls scheduled_statuses timelines conversations lists markers streaming api entities account accountwarning admin account admin canonicalemailblock admin cohort admin dimension admin domainallow admin domainblock admin emaildomainblock admin ip admin ipblock admin measure admin report announcement annualreport appeal application asyncrefresh collection collectionitem collectionwithaccounts context conversation customemoji domainblock error extendeddescription familiarfollowers featureapproval featuredtag filter filterkeyword filterresult filterstatus identityproof instance list marker mediaattachment notification notificationfallback notificationpolicy notificationrequest poll preferences previewcard previewcardauthor privacypolicy profile quote quoteapproval reaction relationship relationshipseveranceevent report role rule scheduledstatus search shallowquote shallowtag status statusedit statussource suggestion tag termsofservice token translation v1 filter v1 instance v1 notificationpolicy webpushsubscription datetime formats datetime formats datetime interoperability date interoperability datetime a datetime specifies an instant in time the string representation of a datetime uses the internet date time format defined in rfc3339 section 5 6 to summarise that is the following mandatory components yyyy mm dd t hh mm ss s tzd where yyyy four digit year mm two digit month 01 january etc dd two digit day of month 01 through 31 hh two digits of hour 00 through 23 24 not allowed mm two digits of minute 00 through 59 ss two digits of second 00 through 60 s one or more digits representing a decimal fraction of a second tzd time zone designator either z for utc or hh mm or hh mm to represent an offset from utc for example 1994 11 05t13 15 30 000z equivalent to 1994 11 05t08 15 30 05 00 see rfc3339 section 5 6 for the complete abnf grammar interoperability the date and time portions are always separated by an uppercase t not lowercase not a space the timezone designator z is always uppercase not lowercase the fractional s part of the second is represented with at least one digit and at most three digits a field may be presented as a datetime while having lower resolution e g the server clamps the value to the midnight on the date in question date a date specifies the calendar date an activity occurred in utc the string representation of a date uses the complete extended calendar date representation from iso 8601 the international standard for the representation of dates and times section 5 2 1 1 this is also the complete date format from w3c date and time formats that is the following mandatory components yyyy mm dd yyyy four digit year mm two digit month 01 january etc dd two digit day of month 01 through 31 interoperability the year month and date components are always separated by a last updated november 21 2025 improve this page sponsored by join mastodon blog view source cc by sa 4 0 imprint