In the Morning vs On the Morning Of: Correct Usage

In the Morning vs On the Morning Of: The Ultimate Preposition Guide

When reading breaking news, writing academic papers, or drafting professional emails, precise preposition usage ensures your meaning remains crystal clear. A frequent point of confusion for writers, journalists, and English learners is choosing between in the morning vs on the morning of. While both phrases refer to the early hours of the day, they perform completely different grammatical functions depending on whether you are describing a general time frame or pinpointing a specific date or event.

Understanding how prepositions of time work is crucial for accurate communication. Misusing these phrases can make professional writing sound awkward or imprecise.

This guide breaks down the core grammar rules, provides over 80 real-world examples, highlights common mistakes, and offers interactive quizzes to help you master this rule effortlessly.

The Core Grammar Rule Defined

The choice between using “in” or “on” before the word “morning” depends entirely on specificity.

[General Time Block] ➔ IN + the morning
[Specific Date / Day / Named Event] ➔ ON + the morning + OF + [Date/Event]

1. “In the morning” (General Time)

Use “in the morning” when referring to the general time period between sunrise and noon, without linking it to a specific date, day of the week, or named historical event. It describes routines, general future plans, or non-specific past events.

• Grammar Rule: Preposition in + Definite Article the + Noun morning.
• Meaning: During the general morning hours.
• Example: The press conference will take place in the morning.

2. “On the morning of” (Specific Date or Event)

Use “on the morning of” when you specify a particular day, date, or event immediately following the phrase. In English, specific calendar days require the preposition “on” (e.g., on Monday, on July 4th). When “morning” is modified by a specific date or event, “on” takes precedence over “in.”

• Grammar Rule: Preposition on + Definite Article the + Noun morning + Preposition of + [Specific Date/Day/Event].
• Meaning: During the morning hours of a specific, identifiable calendar day or historical event.
• Example: The treaty was signed on the morning of November 11.

Quick Comparison Table

Step-by-Step Guide: How to Choose the Right Phrase

Follow this simple decision-making process whenever you write:

Step 1: Look at what comes AFTER the word "morning".
        │
        ├── Is there a specific DATE, DAY, or EVENT? (e.g., "July 4th", "the election")
        │     │
        │     └── YES ➔ Use "ON the morning OF"
        │
        └── Is the sentence ending, or talking about a general time/routine?
              │
              └── YES ➔ Use "IN the morning"

Decision Tree Examples:

1. Sentence: “The prime minister delivered an address _____ July 15th.”
   • Analysis: Followed by a specific date (“July 15th”).
   • Correct Selection: on the morning of
2. Sentence: “Journalists usually review overnight headlines _____.”
   • Analysis: Refers to a general daily routine; no date attached.
   • Correct Selection: in the morning

80+ Practical Examples Across Various Contexts

To build complete mastery, examine how these phrases function across basic, intermediate, news, professional, academic, and daily communication settings.

1. Basic Examples

In the morning

1. She prefers to read the news in the morning.
2. Markets usually open strong in the morning.
3. I take a short walk in the morning.
4. Traffic is heavy in the morning.
5. It is often foggy in the morning near the coast.

On the morning of

6. The event occurred on the morning of January 1st.
7. Parliament convened on the morning of the national holiday.
8. The storm hit on the morning of October 12th.
9. She received the offer on the morning of her graduation.
10. The flight landed on the morning of Tuesday, March 3.

2. Intermediate Examples

In the morning

11. Energy levels tend to peak in the morning for early risers.
12. The committee scheduled the brief discussion in the morning.
13. Snow began falling in the morning and continued all day.
14. Public transit operates on a frequent schedule in the morning.
15. The summary report will be generated in the morning.

On the morning of

16. On the morning of the launch, engineers completed final checks.
17. The headline broke on the morning of the summit.
18. On the morning of June 6, military forces advanced.
19. Officials held a press briefing on the morning of the announcement.
20. The market rallied on the morning of the quarterly earnings release.

3. Advanced & Current Affairs Examples

In the morning

21. Central banks often release policy updates in the morning to allow financial markets time to digest the news.
22. Broadcasters adjust their lineup in the morning to deliver real-time breaking news analysis.
23. Economic analysts noted that consumer confidence typically mirrors early sentiment voiced in the morning.
24. Key diplomatic conversations resumed in the morning following overnight negotiations.
25. Satellite imagery captured in the morning revealed significant environmental changes along the coastline.

On the morning of

26. On the morning of the presidential election, voters formed long lines at polling stations nationwide.
27. The historic peace accord was formally signed on the morning of September 21 in Geneva.
28. Emergency services responded immediately on the morning of the earthquake to coordinate rescue efforts.
29. On the morning of the policy vote, lawmakers gathered for a high-stakes emergency debate.
30. The CEO announced her resignation on the morning of the annual shareholder meeting.

4. Daily Conversation Examples

In the morning

31. “I’ll call you back in the morning when I get to the office.”
32. “Do you drink coffee or tea in the morning?”
33. “It was freezing in the morning, but it warmed up by afternoon.”
34. “Let’s review these travel plans in the morning.”
35. “I always feel most productive in the morning.”

On the morning of

36. “We woke up early on the morning of our flight to London.”
37. “She was visibly nervous on the morning of her driving test.”
38. ” On the morning of my birthday, my family surprised me with breakfast.”
39. “We packed our luggage on the morning of the trip.”
40. “It started snowing on the morning of Christmas Day.”

5. Academic & Historical Writing Examples

In the morning

41. Primary research indicates that cognitive retention rates are higher in the morning.
42. Observations taken in the morning demonstrated lower thermal radiation readings.
43. Historical records show that battles frequently commenced in the morning to maximize daylight.
44. Participants completed the baseline psychometric test in the morning.
45. Ambient noise levels recorded in the morning were significantly lower than afternoon baselines.

On the morning of

46. On the morning of July 14, 1789, citizens stormed the Bastille, altering French history.
47. The diplomatic delegation arrived in Washington on the morning of October 15.
48. On the morning of the treaty signing, delegates issued a joint communique.
49. The volcanic eruption began on the morning of August 24, burial sites suggest.
50. Researchers gathered field samples on the morning of the solar eclipse.

6. Business & Professional Writing Examples

In the morning

51. Our team conducts agile stand-up meetings in the morning.
52. Please ensure all regional reports are uploaded in the morning.
53. Executive leadership prefers reviewing financial audits in the morning.
54. The server maintenance completed successfully in the morning.
55. Client support volume typically spikes in the morning.

On the morning of

56. On the morning of the product release, website traffic surged by 200 percent.
57. The audit team arrived unannounced on the morning of April 15.
58. On the morning of the merger announcement, stock prices fluctuated sharply.
59. We finalized the contract terms on the morning of the closing deadline.
60. On the morning of the interview, candidates must present government-issued ID.

7. Email Writing Examples

In the morning

61. “Dear Team, I will send out the updated agenda in the morning.”
62. “Hi Sarah, let’s catch up in the morning regarding the client project.”
63. “Thanks for the note. I will review the attached documents in the morning.”
64. “Please submit your time-off requests in the morning for approval.”
65. “Our helpdesk will reopen in the morning at 8:00 AM EST.”

On the morning of

66. “Please note that room setup will begin on the morning of October 10th.”
67. “We will send a reminder email on the morning of the webinar.”
68. ” On the morning of your appointment, please bring your medical history forms.”
69. “Access credentials will be issued on the morning of the conference.”
70. “Thank you for registering; a link will arrive on the morning of the event.”

8. Student & ESL Learner Examples

In the morning

71. Students take their exams in the morning.
72. The school bus arrives at 7:30 in the morning.
73. I practice English vocabulary in the morning.
74. The library is quiet in the morning.
75. We have physical education class in the morning.

On the morning of

76. On the morning of the final exam, Maria reviewed her flashcards.
77. The school trip started on the morning of May 5th.
78. On the morning of graduation, all students assembled in the auditorium.
79. He checked his mailbox on the morning of the results day.
80. On the morning of the presentation, my laptop battery died.

9. Correct vs. Incorrect Pair Comparison

Common Mistakes & How to Avoid Them

Mistake 1: Writing “In the morning of [Date]”

• ❌ Incorrect: In the morning of August 12th, the summit began.
• ✅ Correct: On the morning of August 12th, the summit began.
• Why it happens: Writers know that mornings generally take “in” (in the morning), so they forget that a specific date changes the required preposition to “on”.

Mistake 2: Writing “On Monday morning of…”

• ❌ Incorrect: On Monday morning of July 4th…
• ✅ Correct: On the morning of Monday, July 4th… OR On Monday morning, July 4th…
• Why it happens: Mixing day-of-the-week modifiers with “morning of” creates redundant prepositional structures.

Mistake 3: Omitting “the” (“On morning of…”)

• ❌ Incorrect: On morning of the vote, parliament met.
• ✅ Correct: On the morning of the vote, parliament met.
• Why it happens: Skipping the definite article “the” is a common ESL error. Standard English always requires “the” in this phrase.

Easy Memory Hacks & Rules of Thumb

1. The Calendar Rule:
   • If you can circle the specific day on a calendar (e.g., May 5, Election Day, my birthday), use ON.
   • Formula: Calendar Date = On the morning of.
2. The Routine Rule:
   • If you are talking about a repeating habit or unspecified time, use IN.
   • Formula: General Time / Routine = In the morning.
3. The “Of” Test:
   • If your sentence contains the word of right after morning (morning of…), the leading preposition must almost always be on.

Interactive Practice Exercises

Fill in the blanks with the correct phrase: in the morning or on the morning of.

1. The news anchor reads the headlines local time __________.
2. __________ January 20th, the inaugural address was delivered.
3. I always drink a glass of water right after I wake up __________.
4. Structural inspections began __________ the explosion.
5. The executive team will announce the strategic restructuring __________.
6. __________ the trade summit, key leaders held a private breakfast meeting.
7. Weather forecasts predict heavy rainfall __________ across the eastern seaboard.
8. __________ his retirement, the chief editor thanked his staff.
9. Flight departures are frequently delayed __________ due to heavy fog.
10. __________ the trial, protesters gathered outside the courthouse.

Exercise Answer Key

1. in the morning (General routine)
2. On the morning of (Specific calendar date)
3. in the morning (General daily habit)
4. on the morning of (Specific event: “the explosion”)
5. in the morning (Unspecified general future time)
6. On the morning of (Specific event: “the trade summit”)
7. in the morning (General time frame)
8. On the morning of (Specific personal event: “his retirement”)
9. in the morning (General occurrence)
10. On the morning of (Specific event: “the trial”)

5-Question Master Quiz

Test your knowledge with this quick multiple-choice assessment:

1. Choose the grammatically correct sentence:

• A) The peace treaty was signed in the morning of October 15th.
• B) The peace treaty was signed on the morning of October 15th.
• C) The peace treaty was signed at the morning of October 15th.
• D) The peace treaty was signed on morning of October 15th.

2. Complete the sentence: “I prefer to do my writing work _____ when the house is quiet.”

• A) on the morning of
• B) on morning
• C) in the morning
• D) in morning of

3. Complete the headline: “_____ the election, voting booths opened at 6:00 AM.”

• A) In the morning of
• B) On the morning of
• C) On morning
• D) In morning of

4. Why is “in the morning of July 4th” incorrect?

• A) Because “morning” cannot be used with dates.
• B) Because specific dates require the preposition “on”.
• C) Because “July 4th” requires “at”.
• D) Because “in” can only be used with years.

5. Which prepositional phrase is best for describing daily morning routines?

• A) On the morning of
• B) At the morning
• C) In the morning
• D) On morning of

Quiz Answer Key & Explanations

1. B — The peace treaty was signed on the morning of October 15th.
   • Explanation: Specific dates require “on the morning of”.
2. C — in the morning
   • Explanation: Describing a general preference or routine without a specific date requires “in the morning”.
3. B — On the morning of
   • Explanation: “The election” is a specific event, requiring “On the morning of”.
4. B — Because specific dates require the preposition “on”.
   • Explanation: In English grammar, calendar dates dictate the preposition “on”.
5. C — In the morning
   • Explanation: General times and recurring habits take “in the morning”.

Frequently Asked Questions (FAQs) on In the Morning vs On the Morning Of

1. Can I ever say “in the morning of [Date]”?

No. In standard English grammar, pairing “in the morning” with a specific date or event (e.g., “in the morning of June 1st”) is considered incorrect. You must use “on the morning of June 1st” because calendar dates mandate the preposition on.

2. What is the difference between “on Monday morning” and “on the morning of Monday”?

Both are grammatically correct and convey the exact same meaning. “On Monday morning” is more concise and common in conversational speech and news broadcasting. “On the morning of Monday, [Date]” is slightly more formal and often used in legal, academic, or formal news writing.

3. Do British and American English treat this rule differently?

No. The rule for in the morning vs on the morning of is identical in US English, UK English, Canadian English, Australian English, and other standard English varieties globally.

4. Can I use “at the morning”?

No. The preposition “at” is used for specific clock times (e.g., at 8:00 AM, at noon, at night), but never with “morning”. Always use in the morning or on the morning of.

5. What preposition should I use for afternoon and evening?

The exact same rule applies!

• General: in the afternoon, in the evening.
• Specific Date/Event: on the afternoon of [date], on the evening of [date].

Article Summary & Downloadable Study Notes

===================================================================
                  PREPOSITION QUICK REFERENCE GUIDE
===================================================================
1. IN THE MORNING
   - Use for general times, habits, routines, or non-specific days.
   - Example: "I check my email in the morning."

2. ON THE MORNING OF
   - Use when followed by a SPECIFIC date, day, or named event.
   - Example: "On the morning of May 12th, the law took effect."

3. FORMULA TO REMEMBER:
   - General Time  ---> IN
   - Calendar Date ---> ON + OF
===================================================================

Mastered this rule? Bookmark this article for quick reference during your writing process, or share it with a colleague who wants to perfect their editing skills! Check out our full Grammar Section for more current affairs style guides.

Disclaimer

This grammar guide is published for educational and informational purposes. While standard rules of English grammar are presented according to contemporary professional and journalistic standards (including Associated Press and Chicago Style conventions), stylistic preferences may vary slightly across specific publishing houses or academic institutions.

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