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day 1 vs day one

Both 'day 1' and 'day one' are correct, but they are used in different contexts. 'Day 1' is commonly used to refer to the first day of an event, project, or journey, while 'day one' is often used to indicate the beginning or starting point of something. The choice between the two depends on the specific context in which they are being used.

Last updated: March 30, 2024 • 1127 views

This phrase is correct and commonly used to refer to the first day of an event, project, or journey.

"day 1"

Use 'day 1' when referring to the specific first day of an event, project, or journey. It is a concise way to indicate the initial day.

Examples:

  • We will start the training program on day 1 of the conference.
  • On day 1 of the trip, we visited the famous landmarks in the city.
  • Patient monitoring on day 1 should include vital signs, including pulse, blood pressure and respiratory rate.
  • There was no evidence of protection from disease caused by vaccine HPV types for which subjects were PCR positive at day 1.
  • And Ryan dumped me... day 1.
  • He's been gunning for Freddie since day 1.
  • Rituximab is the medication which is given to you on day 1 or directly before Zevalin treatment (see 3.
  • 3 mg on day 1, 10 mg on day 2 and 30 mg on day 3, as long as each dose is well tolerated.
  • on day 1, possibly repeated once within 3 days
  • on day 1, possibly repeated once within 3 days
  • 3 mg on day 1, 10 mg on day 2 and 30 mg on day 3 assuming that each dose is well tolerated.
  • On your first visit (day 1) you will be given o One rituximab infusion
  • After administration, fluoxetine readily appeared in plasma with mean Tmax values ranging from 1.25 to 1.75 hours on day 1 and from 2.5 to 2.75 hours on day 21.
  • Plasma levels readily declined with mean t1/2 values ranging from 4.6 to 5.7 hours on day 1 and from 5.1 to 10.1 on day 21.
  • A total of 156 patients were randomised to treatment with 5-FU (800 mg/ m2 per day, continuous infusion on days 1 to 5 every 3 weeks) and cisplatin (80 mg/ m2 as a 2-hour infusion on day 1, every 3 weeks).
  • The apparent clearance of ara-G (Cl/ F) is comparable between the two groups [9.5 l/ h/ m2 (35%) in adult patients and 10.8 l/ h/ m2 (36%) in paediatric patients] on day 1.
  • hour infusion on day 1 every 3 weeks) and 5-FU (200 mg/ m2 daily given by continuous infusion via a central line).
  • hour infusion on day 1 every 3 weeks), and Xeloda (625 mg/ m2 twice daily continuously).
  • a 2 hour infusion on day 1 every three weeks), and 5-FU (200 mg/ m2 daily given by continuous infusion via a central line).
  • a 2 hour infusion on day 1 every three weeks), and Xeloda (625 mg/ m2 twice daily continuously).
  • Ondansetron was administered intravenously 30 minutes prior to chemotherapy treatment on Day 1.
  • Dexamethasone was administered 30 minutes prior to chemotherapy treatment on Day 1.

Alternatives:

  • the first day
  • the initial day
  • day one

This phrase is correct and often used to indicate the beginning or starting point of something.

"day one"

Use 'day one' to emphasize the starting point or beginning of a process, journey, or experience. It conveys the idea of the initial stage.

Examples:

  • From day one, I knew this project would be challenging.
  • She has been with the company since day one.
  • Yes, sir, day one.
  • People, I said it day one.
  • Marius caught them, day one.
  • A child's adjustment starts on day one, especially for trauma victims.
  • And that's just day one.
  • A simple puzzle I solved on day one.
  • OK, so day one, Kelly's abducted.
  • Well, day one, Joyce brought your favorite coffee, French roast.
  • I called this pair day one.
  • One guy quit after lunch, day one.
  • An estimated 50 million people watched Carl Lucas win day one.
  • I'm ready for day one.
  • So today is day one of the Louis Litt rehabilitation program.
  • Stopped trying to figure her out day one.
  • This is day one of 42.
  • It's day one of the first week.
  • Today is day one of a brand-new world.
  • A $3 million bust on day one.
  • Let's not blow it on day one.
  • That way day one of the zombie apocalypse.

Alternatives:

  • the beginning day
  • the starting day
  • day 1

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