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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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was valid from

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "was valid from" is correct and usable in written English.
It can be used to indicate the starting point of a validity period for something, such as a contract, offer, or policy. Example: "The promotion was valid from January 1st to March 31st."

✓ Grammatically correct

Science

News & Media

Academia

Human-verified examples from authoritative sources

Exact Expressions

4 human-written examples

We have had a little pre-buy effect because Euro 4, the latest emissions standard, was valid from the first of October.

News & Media

Forbes

The control arm (5-FU/FA) was valid from a UK perspective as this regimen is most commonly used in the UK (Seymour et al, 1997).

The IACUC approval number of the present study was IACUC-10210 and was valid from 10/20/2013 to 12/31/2014.

We also made our draft report available to respondents who were willing to read it, to check if it was valid from the perspective of their experiences that we were trying to describe and analyse.

Human-verified similar examples from authoritative sources

Similar Expressions

56 human-written examples

The offer is valid from Nov. 1 to March 31.

-Prize is valid from 6 months from date of draw.

News & Media

Independent

American Airlines' promotion is valid from Jan . 6until Feb. 15 for outbound travel Sunday through Wednesday, returning on Tuesday through Friday.

Travel is valid from Monday to Thursday and must originate by March 31; tickets must be purchased by Saturday.

In principle, the kinetic description is valid from the dilute (non-collisional) to the dense limit.

The physical model proposed by Guglielmi has been shown to be valid from the present system at low current densities.

All the files are valid from 01 January of the year in the filename to 01 January of the following year.

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Expert writing Tips

Best practice

Use "was valid from" to clearly specify the start date or time from which a rule, offer, or condition becomes effective. This helps avoid ambiguity about when something applies.

Common error

Avoid stating only the start date without a clear end date for validity. If the validity is for a limited time, always specify both the "was valid from" date and the expiration date.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

84%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "was valid from" functions as a prepositional phrase that modifies a noun or clause by specifying the starting point of a period of validity or effectiveness. This can relate to rules, offers, data, or any other state needing a defined start date. Ludwig AI confirms its grammatical correctness.

Expression frequency: Uncommon

Frequent in

Science

30%

News & Media

30%

Academia

20%

Less common in

Formal & Business

10%

Encyclopedias

5%

Wiki

5%

Ludwig's WRAP-UP

In summary, the phrase "was valid from" serves as a crucial element in establishing temporal context. As validated by Ludwig AI, it correctly denotes the starting point of validity for an event, offer, rule or condition. Its usage spans across diverse fields including science, news, academia and formal business settings, which denotes a generally neutral register. To enhance clarity, ensure a clear start and end date of the condition is specified, while alternatives like "became effective on" can be used depending on the context. While it is not the most common phrase, it's perfectly correct and useful when expressing the beginning validity of something.

FAQs

How do I use "was valid from" in a sentence?

Use "was valid from" to indicate the starting date or time when something became effective or applicable. For example, "The offer "is valid from" January 1st".

What can I say instead of "was valid from"?

You can use alternatives like "became effective on", "took effect on", or "applied starting" depending on the context.

Which is correct, "was valid from" or "is valid from"?

"Was valid from" indicates something that was valid in the past starting from a certain date. "Is valid from" indicates something that is currently valid starting from a certain date.

What's the difference between "was valid from" and "was valid until"?

"Was valid from" specifies the start date of validity, while "was valid until" specifies the end date. Both are needed to define a specific period of validity if there's an expiration.

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Source & Trust

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Authority and reliability

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Expert rating

Real-world application tested

Most frequent sentences: