# validFrom

The date when the item becomes valid.

## Expected Types

| Type | Description |
|------|-------------|
| [Date](https://schema.org.ai/Date) | A date value in [ISO 8601 date format](http://en.wikipedia.org/wiki/ISO_8601). |
| [DateTime](https://schema.org.ai/DateTime) | A combination of date and time of day in the form \[-\]CCYY-MM-DDThh:mm:ss\[Z\|(+\|-)hh:mm\] (see Chapter 5.4 of ISO 8601). |

## Used on Types

| Type | Description |
|------|-------------|
| [Certification](https://schema.org.ai/Certification) | A Certification is an official and authoritative statement about a subject, for example a product, service, person, or organization. A certification is typically issued by an indendent certification body, for example a professional organization or government. It formally attests certain characteristics about the subject, for example Organizations can be ISO certified, Food products can be certified Organic or Vegan, a Person can be a certified professional, a Place can be certified for food processing. There are certifications for many domains: regulatory, organizational, recycling, food, efficiency, educational, ecological, etc. A certification is a form of credential, as are accreditations and licenses. Mapped from the [gs1:CertificationDetails](https://www.gs1.org/voc/CertificationDetails) class in the GS1 Web Vocabulary. |
| [Demand](https://schema.org.ai/Demand) | A demand entity represents the public, not necessarily binding, not necessarily exclusive, announcement by an organization or person to seek a certain type of goods or services. For describing demand using this type, the very same properties used for Offer apply. |
| [FinancialIncentive](https://schema.org.ai/FinancialIncentive) | Represents financial incentives for goods/services offered by an organization (or individual). Typically contains the [name](https://schema.org.ai/name) of the incentive, the [incentivizedItem](https://schema.org.ai/incentivizedItem), the [incentiveAmount](https://schema.org.ai/incentiveAmount), the [incentiveStatus](https://schema.org.ai/incentiveStatus), [incentiveType](https://schema.org.ai/incentiveType), the [provider](https://schema.org.ai/provider) of the incentive, and [eligibleWithSupplier](https://schema.org.ai/eligibleWithSupplier). Optionally contains criteria on whether the incentive is limited based on [purchaseType](https://schema.org.ai/purchaseType), [purchasePriceLimit](https://schema.org.ai/purchasePriceLimit), [incomeLimit](https://schema.org.ai/incomeLimit), and the [qualifiedExpense](https://schema.org.ai/qualifiedExpense). |
| [LocationFeatureSpecification](https://schema.org.ai/LocationFeatureSpecification) | Specifies a location feature by providing a structured value representing a feature of an accommodation as a property-value pair of varying degrees of formality. |
| [MonetaryAmount](https://schema.org.ai/MonetaryAmount) | A monetary value or range. This type can be used to describe an amount of money such as $50 USD, or a range as in describing a bank account being suitable for a balance between £1,000 and £1,000,000 GBP, or the value of a salary, etc. It is recommended to use [PriceSpecification](https://schema.org.ai/PriceSpecification) Types to describe the price of an Offer, Invoice, etc. |
| [Offer](https://schema.org.ai/Offer) | An offer to transfer some rights to an item or to provide a service — for example, an offer to sell tickets to an event, to rent the DVD of a movie, to stream a TV show over the internet, to repair a motorcycle, or to loan a book. Note: As the [businessFunction](https://schema.org.ai/businessFunction) property, which identifies the form of offer (e.g. sell, lease, repair, dispose), defaults to [http://purl.org/goodrelations/v1#Sell](http://purl.org/goodrelations/v1#Sell); an Offer without a defined businessFunction value can be assumed to be an offer to sell. For [GTIN](http://www.gs1.org/barcodes/technical/idkeys/gtin)-related fields, see [Check Digit calculator](http://www.gs1.org/barcodes/support/check_digit_calculator) and [validation guide](http://www.gs1us.org/resources/standards/gtin-validation-guide) from [GS1](http://www.gs1.org/). |
| [OpeningHoursSpecification](https://schema.org.ai/OpeningHoursSpecification) | A structured value providing information about the opening hours of a place or a certain service inside a place. The place is \_\_open\_\_ if the [opens](https://schema.org.ai/opens) property is specified, and \_\_closed\_\_ otherwise. If the value for the [closes](https://schema.org.ai/closes) property is less than the value for the [opens](https://schema.org.ai/opens) property then the hour range is assumed to span over the next day. |
| [Permit](https://schema.org.ai/Permit) | A permit issued by an organization, e.g. a parking pass. |
| [PriceSpecification](https://schema.org.ai/PriceSpecification) | A structured value representing a price or price range. Typically, only the subclasses of this type are used for markup. It is recommended to use [MonetaryAmount](https://schema.org.ai/MonetaryAmount) to describe independent amounts of money such as a salary, credit card limits, etc. |

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Quoted from Schema.org 30.1, https://schema.org/validFrom, under CC BY-SA 3.0. Served by the Org.AI Foundation at https://schema.org.ai/validFrom.