What was the date 18 months ago?

Solution

Sunday May 21, 2023

0

18 months before today was 21 May 2023, a Sunday. Subtracting 18 months in the past is usually just counting from November; however, longer calculations will push us from 2024 into 2023 or further. Even if the calculation remains within the year, I usually take note of the 21 days left in the end of November to prep for an additional calculation before October. But that’s all there is to it - understand the month, if 18 months will change the year, season, or fiscal calendar, and subtract your dates.

How we calculated 18 months before today

All of our day calculators are measured and QA'd by our engineer. Read more about the Git process here. But here's how 18 months ago gets calculated on each visit:

  1. We started with date inputs: used current day of 21 Nov, then set the calculation - 18 months, and factored in the year 2024
  2. Noted your current time of year: 18 months in November will keep us in November and we don’t need to worry about adjusting months or years.
  3. Counted backwards months from current day: date - 21 Nov, factoring in the 21 days left in November to calculate Sunday May 21, 2023
  4. Did NOT factor in workdays: In this calculation, we kept weekend. See below for just workdays or the fiscal calendar

Tips when solving for May 21

  • Current date: 21 Nov
  • Day of the week: Sunday
  • New Date: Sunday May 21, 2023
  • New Date Day of the week: Sunday
  • Counting backward from May could put you back in Q1 or even the previous year.
  • This calculation crosses at least one month. Remeber, this will change our day of the week.
  • The solution crosses into a different year.

Ways to calculate 18 months ago

  1. Calculate it: Start with a time ago calculator. 18 months is easiest solved on a calculator. For ours, we've already factored in the 21 days in November + all number of days in each month and the number of days in . Simply add your months and choose the length of time, then click "calculate". This calculation does not factor in workdays or holidays (see below!).
  2. Use November's calendar: Begin by identifying 21 Nov on a calendar, note that it’s Sunday, and the total days in October (trust me, you’ll need this for smaller calculations) and days until last year (double trust me, you'll need this for larger calculations). From there, count backwards 18 times months by months, subtracting months from until your remainder of months is 0.
  3. Use excel: For more complex months calculations or if you h8 our site (kidding), I use Excel functions like =TODAY()-18 to get or =WORKDAY(TODAY()), -18, cell:cell) for working months.

Working months in 18 calendar months

18 months is Sunday May 21, 2023 or could be if you only want workdays. This calculation takes 18 months and only subtracts by the number of workdays in a week. Remember, removing the weekend from our calculation will drastically change our original Sunday May 21, 2023 date.

Work months Solution

Date 18 work months ago
Monday October 03, 2022

Week of Sunday May 21, 2023

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

18 months back

Sunday

May 21

The past 18 months is equivalent to:

Counting back from today is Sunday May 21, 2023 using a full calendar, and is also 13392 hours ago and 38.63% of the year.

18 months = 13392 hours

18 months = 18.0 months

18 months = 79.714 weeks

18 months = 1.529 years

18 months = 803520 minutes

18 months = 48211200 seconds

Did you know?

Sunday Sunday May 21, 2023 was the 141 day of the year. At that time, it was 38.63% through 2023.

Similar days before problems

In 18 months, the average person Spent...

  • 119858.4 hours Sleeping
  • 15936.48 hours Eating and drinking
  • 26114.4 hours Household activities
  • 7767.36 hours Housework
  • 8570.88 hours Food preparation and cleanup
  • 2678.4 hours Lawn and garden care
  • 46872.0 hours Working and work-related activities
  • 43122.24 hours Working
  • 70575.84 hours Leisure and sports
  • 38301.12 hours Watching television

What happened on May 21 (18 months ago) over the years?

On May 21:

  • 1908 1st American horror movie silent film "Dr Jekyll & Mr Hyde" premieres in Chicago
  • 1904 Federation Internationale de Football Association (FIFA) forms in Paris