Ideas + date finder
100 and 1000 day anniversary ideas, with your exact dates
Your 100th day together falls about three months and ten days after the day you got together, and your 1,000th day about two years and nine months after it (exactly 2 years, 8 months and 24 to 28 days, depending on the months in between). Enter your date below for the exact days, then pick an idea: small ones for day 100, and ideas that look back on almost three years for day 1,000. Counting the first day as day 1, as many Korean couples do, moves each date one day earlier.
When is our 100th or 1,000th day?
Enter the day you got together. The list shows your next milestones, including day 100, 200, 500 and 1,000, with the exact date and how many days are left. Tick "Count the first day as day 1" to count the Korean way, and add the dates to your calendar with one tap. The full anniversary calculator, with gifts by year, is linked at the end of the ideas.
Runs in your browser; nothing is saved or sent. By default the day you got together is day 0, so day 100 is 100 days later.
Why couples count 100 and 1,000 days
Counting a relationship in days, not only in years, is a well-known custom among couples in South Korea. The 100th day is the first big one. The number 100 has long mattered there: families celebrate a baby's 100th day, a custom from times when surviving the first 100 days was a real milestone.
Many Korean couples count from the day they became official and call that day day 1. They mark 100 days, then often 200, 300 and 500, and 1,000 days stands out as nearly three years together. For day 100, a common gift is something small and personal, such as a letter or matching accessories; couple rings are a classic.
You don't need the custom to enjoy it: 1,000 days is a good excuse to celebrate between the usual anniversaries. There's no fixed rule, so if your partner grew up with the custom, ask how their family and friends mark it.
Sources: Korea JoongAng Daily: For love in Korea, follow the rules · Tatler Asia: Korean dating and couple culture · Koreabridge: Understanding South Korea's dating norms
100 day anniversary ideas
Day 100 comes early, so keep it light. These cost little or nothing and work for a boyfriend or a girlfriend.
A letter about your first 100 days
Ten small moments from the first three months, written down in order: the first message, the first time they made you laugh, the night you knew.
How to do it: Scroll back through your messages and photos to find them. Handwritten on one page is enough.
Something small that matches
Matching keychains, bracelets or phone cases, or simple couple rings if you both like the idea.
How to do it: Keep it modest at 100 days. Engrave or write the start date on it so it's about the two of you.
Go back to your first date
The same café, park or restaurant, at about the same time of day.
How to do it: Take a photo there. It becomes the first frame of whatever you make for day 1,000.
A list for the next 100 days
Write down ten things to do together before day 200, from a new restaurant to a weekend away.
How to do it: Put it on the fridge or in a shared note and tick them off as you go.
Your first 100 days in photos
Pick one photo from each week you've been together, about 14 in all, and put them in order.
How to do it: Print them as a strip or send them as an album with a short message on the morning of day 100.
Your first 100 days as a 1-minute film
12 photos from your first three months, each one redrawn in the style you pick and brought to life as a short moving scene, in order by date.
How to do it: Add your photos to Once Upon Us and pick the two of you as characters from three drawings. A 1 minute film is $24.99. Make a 100-day film
1000 day anniversary ideas
By day 1,000 you have almost three years of photos, places and inside jokes. These ideas use them.
Tell 1,000 days in 33 photos
1,000 days is about 33 months. One photo from each month, in order, tells your story from the first date to this week.
How to do it: Make a shared album and fill it together; a month without a photo gets the moment that came closest. The month-by-month plan for a first year works the same way. See the month-by-month plan
One letter for each year
Three short letters: one about your first year, one about the second and one about the months since.
How to do it: Number the envelopes and open them in order over dinner.
A trip back to where it started
The city, beach or neighborhood where you met, or where you went on your first trip.
How to do it: Recreate one photo from back then in the same spot and put the two side by side.
A small photo book
Your 33 monthly photos with a line under each one.
How to do it: Online photo books usually take a week or more to arrive, so order about two weeks before the day.
Celebrate it across the distance
If you're long distance, plan the day as a video call: the same meal in two kitchens and a box of small gifts to open together.
How to do it: Mail the box about two weeks ahead and write "Open on day 1,000" on it. Long-distance anniversary gift ideas
Your 1,000 days as a 3-minute film
36 photos, about one for each month of your 1,000 days, redrawn in one style and brought to life in order, with your names in the opening and words on screen.
How to do it: You pay once, then check every scene before it comes to life. A 3 minutes film is $49.99, and it's usually ready the same day. Make a 1,000-day film
A time capsule for day 2,000
Each of you writes a note to open on day 2,000, about five and a half years in.
How to do it: Seal the notes in an envelope with the date on it and put day 2,000 in your calendar.
Plan the days in between
Two small habits that make the next milestone easy.
Put the next milestones in your calendar
The date finder above saves your next six milestones as a calendar file that works in Apple Calendar, Google Calendar and Outlook.
How to do it: Turn on a reminder a week before each one so there's time to plan. Open the full anniversary calculator
Mark 200, 300 and 500 days lightly
A favorite dessert, a short walk, a photo in the same spot each time.
How to do it: Small and regular beats big and rare; the photos add up to a timeline by day 1,000.
Example frames in three of the six styles. Your film is drawn from your own photos.
Made with you, scene by scene. Add your photos, pick your characters and see your first scene free before you pay, then check each scene before it comes to life.
Start our filmQuestions
When is my 1000 day anniversary?
1,000 days after the day you got together, or 999 days after it if you count the first day as day 1. Enter your date in the box above for the exact date and how many days are left.
How long is 1000 days in years and months?
2 years, 8 months and 24 to 28 days, depending on which months fall in between. Most people round it to about two years and nine months.
When is the 100 day anniversary?
About three months and ten days after you got together: 100 days later, or 99 days later if you count the first day as day 1.
Why do Korean couples celebrate 100 days?
Counting days together is a common custom among couples in South Korea, and 100 is a number with long-standing meaning there, from the celebration of a baby's 100th day. Day 100 is the first big milestone, often marked with a small gift such as couple rings or a letter.
What is a good 1000 days together gift?
Something that looks back on almost three years: a letter for each year, a trip to where you met, a photo book or a short film of your story with one photo from each month.
Is a 100 day anniversary a big deal?
It depends on the couple. In Korea it's widely celebrated; elsewhere it's a nice excuse for something small. If you're not sure, a letter or a date at your first spot is enough.
More gift guides
More: 10 anniversary video ideas · the six film styles
Made for every occasion
Updated November 6, 2026