Send one
A pop-up birthday card, sent as a link.
Enter their birthday. You get a link; they get an engraved pop-up book about the day they were born — the sky that night, what things cost, who shares the day, their life in weeks — and at the end, a birthday poster with their name on it, if you want to go that far.
Here is their card. Copy the link and text it, or open it first to see what they will see.
Nothing is stored. The birthday lives after the # in the link, which our server never sees; the card is drawn in their browser when they open it.
What they get
A book, then a poster.
The link opens the pop-up book: the sky over the world the night they arrived, the No. 1 that week, the president, what a stamp and a gallon of gas cost, their life in weeks, the people who share the day and who was exactly their age when they did the thing they are known for. The last page is the birthday poster — engraved, eighteen by twenty-four, with their name and where they were born — which either of you can take home as a file, or have printed and shipped.
Born after 2010? The link opens straight at the poster; the book waits until they are older.
Or start from the day
Every day of the year has a page.
If you know the day but want to check the sign, the stone, the flower and who shares it first, start at the calendar.