1 PM

USAGE SUMMARY

The phrase "1 PM" is correct and usable in written English. You can use it to indicate the time of day, typically in schedules or appointments. Example: "The meeting is scheduled for 1 PM." Alternative expressions include "1 o'clock in the afternoon" and "13:00."

✓ Grammatically correct

News & Media

Wiki

Social Media

Human-verified examples from authoritative sources

Exact Expressions

50 human-written examples

Presbyterian Church, March 16th at 1 pm.

The New York Times

Services Friday 1 PM at "The Riverside".

The New York Times

Graveside service New Montefiore Cemetery, Sunday, March 6, 1 PM.

The New York Times

Service 1 PM, Sunday, at "Schwartz Brothers-Jeffer," Queens Blvd.

The New York Times

Services Sunday, 1 PM Riverside Chapel, Mt. Vernon, NY.

The New York Times

Graveside services Sunday, Beth David Cemetery, 1 PM.

The New York Times

Funeral June 14, 1 PM, Gramercy Memorial Chapel.

The New York Times

Services Tuesday 1 PM at Frank E. Campbell, 81st & Madison.

The New York Times

Services Wednesday 1 pm at "Guttermans" 8000 Jericho Tpk.

The New York Times

Services Beth Israel Cemetery, Wood bridge, NJ, Tuesday, 1 pm.

The New York Times

Services Cedar Park Cemetery, Emerson, NJ, Friday, 1 PM.

The New York Times

Expert writing Tips

Best practice

Always include a space between the digit and the abbreviation (e.g., "1 PM" rather than "1PM") to improve readability and follow standard typography rules.

Common error

Avoid using the phrase "in the afternoon" immediately following "1 PM". Since "PM" (post meridiem) already indicates the time is after noon, adding "in the afternoon" is redundant and unnecessary.

Linguistic Context

In grammatical terms, "1 PM" functions as a time adverbial or a noun phrase that specifies a temporal point. According to Ludwig AI, it is commonly used to anchor events within a schedule, often appearing after prepositions like "at" or "by".

Expression frequency: Common

Frequent in

News & Media

85%

Wiki

10%

Social Media

5%

Less common in

Academia

3%

Science

1%

Reference

1%

Ludwig's WRAP-UP

In conclusion, "1 PM" is a fundamental and correct time expression in the English language. Ludwig AI confirms that it is extensively used across professional news platforms and informal digital media to designate the first hour after midday. While there are stylistic variations such as "1 p.m." or "13:00", the choice usually depends on the specific style guide or regional preference being followed. The most important takeaway from the Ludwig examples is that "1 PM" provides a clear, unambiguous marker for scheduling events, provided the writer remains consistent with spacing and capitalization throughout their text.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

1 p.m.

Uses lowercase with periods, following the style guides of major news organizations like the Associated Press.

1:00 PM

Adds minutes for greater precision, commonly used in digital clocks and appointment scheduling.

1:00 p.m.

A combination of precise minutes and lowercase abbreviation with periods.

one o'clock

Spells out the number, often preferred in narrative writing or casual conversation.

13:00

Uses the 24-hour clock format, common in international, military, and technical contexts.

one in the afternoon

Descriptive narrative form that emphasizes the time of day without using abbreviations.

1 PM sharp

Adds an emphasis on punctuality, indicating that the event begins exactly at that time.

13h

European shorthand notation for the 13th hour of the day.

1300 hours

The verbalized military version of the time.

one post meridiem

The full Latin phrase for the PM abbreviation, used very rarely and only for extreme formality.

FAQs

How do I use "1 PM" in a sentence?

You can use "1 PM" to specify the start time of an event or a deadline. For example, "The memorial service will begin at 1 PM at the chapel."

What is the difference between "1 PM" and "1 p.m."?

The difference is purely stylistic. "1 PM" is standard in business and casual digital communication, whereas "1 p.m." is the preferred format for journalistic and academic publications following AP or Chicago style.

Can I use "13:00" instead of "1 PM"?

Yes, "13:00" is the equivalent in the 24-hour clock system. It is widely used in Europe and for international travel schedules to avoid confusion between morning and afternoon.

Should I write "one o'clock" or "1 PM"?

Use "one o'clock" in literary or formal narrative contexts. Use "1 PM" for schedules, invitations, and technical writing where clarity and brevity are prioritized.