How the Hebrew Calendar Adds a Whole Leap Month
Seven times every nineteen years, the Jewish calendar inserts an entire extra month — mathematics fixed in the fourth century and never wrong since.
Time & Date
Articles filed under Time & Date.
Why Days Are Named After Planets and Gods
Thursday is Thor's day. In French it belongs to Jupiter. Both are right — and both descend from the same Roman astrologers.
Why Prayer Time Apps Disagree: Calculation Methods Explained
Two apps, same city, same day — and Fajr differs by twenty minutes. Neither is broken; they follow different scholarly conventions.
Where the Month Names Come From: Gods, Emperors, and a Counting Error
September means 'seventh month' — yet it's the ninth. The names of the months are a tour of Roman religion, politics, and stubborn habit.
Why Do Clocks Run Clockwise?
The hands on your watch chase a shadow that stopped mattering centuries ago — the sundial's shadow, in the northern hemisphere.
Why Does February Have Only 28 Days?
Blame Rome: a superstition about even numbers, a calendar that once ignored winter entirely, and an emperor's month that refused to be short.
The Speaking Clock: When People Telephoned to Ask the Time
'At the third stroke, it will be...' — for ninety years, millions have dialed a number just to hear a voice announce the hour.
Why Does a Week Have Seven Days?
Unlike days, months, and years, nothing in the sky repeats every seven days. The week is humanity's own invention — and one of its most durable.
UTC+5, GMT+8, +05:30 — Time Zone Offset Notation Explained
Every time zone is just a signed number counted from one line in London. Learn the notation once and no timetable will confuse you again.
Why Arizona Doesn’t Change Its Clocks (Except Where It Does)
Most of Arizona hasn't touched its clocks since 1968 — but drive across the Navajo Nation and you'll change time zones four times without leaving the…