Day 100, 500 and 1,000 together: when they fall

Counting the day you got together as Day 1, Day 100 lands about 3 months and 1 week later, Day 500 about 1 year and 4 months later, and Day 1,000 about 2 years and 9 months later. For your exact dates, enter your start date in our days together calculator. Round numbers are a nice excuse for something small: a note, a photo from that first month, a walk to the same place. In Duoleaf, Home shows the number every day and offers a card when you reach one.

Android now, iPhone soon. Free for both of you; optional Duo Premium. Updated October 16, 2026.

Why Duoleaf: Round numbers show up as a small card you can share, never as a forced pop-up.

Duoleaf sheet: Day 1,300 together. A round number for you two. Want a card for it?
Round numbers get a small card you can share, never a forced pop-up.

When the round numbers fall

MilestoneRoughly after
Day 1003 months and 1 week
Day 2006 months and 2 weeks
Day 3651 year, minus a day
Day 5001 year and 4 months
Day 1,0002 years and 9 months
Day 1,5004 years and 1 month
Day 2,0005 years and 5 months

Exact dates depend on leap years and on whether your first day is Day 1 or day 0. The days together calculator lists your next four round numbers and your next anniversary.

Small ways to mark a round number

  • Write one line about the day you met and swap it.
  • Find the oldest photo of the two of you and set it as a wallpaper for a day.
  • Go back to the place of your first date, or cook what you ate.
  • Long distance: call at the same time and open a small thing you each posted.
  • Do something tiny together that day, like two minutes of stretching, and keep it going.

How Duoleaf marks them

Home shows "Day N together" every day. On round numbers (the next hundred, then the next thousand above 1,000, or your anniversary, whichever comes first) the app offers a card you can save or send. It appears as a sheet a moment after Home opens, and "Not now" is always there.

Questions

When is our 1,000th day together?

About 2 years and 9 months after the day you got together, counting that day as Day 1. The calculator gives the exact date.

Is Day 365 our anniversary?

Almost. If the first day is Day 1, your first anniversary is Day 366 (Day 367 if a leap day falls in between).

Does Duoleaf remind us of round numbers?

Home shows the number every day and offers a card on round numbers. Your daily reminder is separate and set by each of you.

Plant your first leaf today.

Two minutes each. One plant for two.