Programmer's Countdown 2027
How many days until Programmer's?
The Day of the Programmer is an international professional day recognized in many technology companies and programming firms, that is celebrated on the 256th (hexadecimal 100th, or the 28th) day of each year (September 13 during common years and on September 12 in leap years). The number 256 (28) was chosen because it is the number of distinct values that can be represented with an eight-bit byte, a value well-known to programmers. 256 is also the highest power of two that is less than 365, the number of days in a common year.
| Programmer's 2027 | 13/09/2027 |
| Programmer's 2028 | 13/09/2028 |
| Programmer's 2029 | 13/09/2029 |
| Programmer's 2030 | 13/09/2030 |
| Programmer's 2031 | 13/09/2031 |
How long until Programmer's?
Programmer's falls on Monday, 13 September 2027, which is 391 days away — 55 weeks and 6 days, or roughly 12.8 months. That is 9,384 hours on the countdown above, which updates every second.
It is marked in the United States.
Programmer's does not sit on a fixed calendar date — it moves from year to year, so the countdown targets the next occurrence rather than a repeating day number.
Holidays
| Columbus Day | 14/10/2026 | 57 days |
| Thanksgiving Day in Canada | 14/10/2026 | 57 days |
| Halloween | 31/10/2026 | 74 days |
| Day of the Dead | 02/11/2026 | 76 days |
| Guy Fawkes Night | 05/11/2026 | 79 days |
| Remembrance Sunday | 10/11/2026 | 84 days |