Blog
Short explainers on the parts of timekeeping that usually cause confusion.
2026-10-20
AM, PM and Midnight, Explained Plainly
Why 12 AM is midnight, why 12 PM is noon, and how to avoid the most common clock mix-up.
2026-10-21
Daylight Saving and Time Zone Conversion
Why the gap between two cities changes through the year, and how converters handle DST gaps and repeats.
2026-10-22
Leap Days, Birthdays and Age
What happens to a 29 February birthday in an ordinary year, and how age arithmetic handles it.
2026-10-23
Month-End Overflow: Why January 31 Plus One Month Is Tricky
Adding months is not like adding days. Here is the clamping rule, and why it is the honest choice.
2026-10-24
Counting Days: Inclusive or Exclusive?
Two honest answers to how many days until a date, and how to tell which one you are reading.
2026-10-25
Why Timers Jump When a Tab Sleeps
Browsers slow down background tabs on purpose. Good timers do not count ticks — they subtract timestamps.