# Find your Birthday in pi

This tool finds the position of your birthday or any other date, in the first 2 billions pi digits.

This tool searches for a given birthday in the sequence of 2 billions pi digits.

pi = 3.14159265358979323846264338327950288419716939937510.....

pi digits sequence being infinite, we can find in it any finite sequence of numbers : your birthday, your social security number but also, the last book you read, encoded in decimal numbers..

This tool supposes that a date is always a 8-digits number : 2 digits for the day, 2 digits for the month and 4 digits for the year. For example, the search for the date 'March, 4th, 1982', will be done with these sequences,

- 03041982 in USA format (MMDDYYYY), 03/04/1982
- 04031982 in EURO format (DDMMYYYY), 04/03/1982
- 19820304 in ISO format (YYYYMMDD), 1982/03/04

Writing a date with 8 digits is a simple convention to limit the high number of possibilities. For example, for the date 'March, 4th 1982', we could also search for 341982 (3/4/1982) or 3482 (3/4/82) which correspond to the same date. For this reason, we limit the search to 8 digits dates.

## The first 10 birthdays found in pi

Given this convention (8 digits date), the 10 first birthdays that appears in pi are the following,

Date Sequence Format Position in pi
14th sept 2019 20190914 ISO 244
21st sept 1953 19530921 ISO 417
17th feb 1907 19070217 ISO 541
13 may 2000 05132000 USA 596
29th feb 1960 29021960 EURO 713
21st sept 1959 19590921 ISO 985
18th oct 1942 10181942 USA 1223
25th nov 1935 19351125 ISO 1345
24th apr 1965 04241965 USA 1877
14th jun 1966 06141966 USA 2914