Birthday Calculator

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What can you learn about your birthday?

  • What is my sign for my birthday? Learn western zodiac signs, Chinese zodiac signs, lucky numbers, and compatibility
  • What is my birthstone? See which birthstones are assigned to your birthday
  • Which celebrities have the same birthday? Learn which celebrities share my birthday
  • Who was born on my birthday? Famous people in history with the same birthday
  • What happened on my birthday? Historical events on your birthday
  • What was the number one song on my birthday? The number one song on a date
  • What day was it on my birthday? Find the day of the year and the day of the week
  • How many days until my birthday? Calculate the number of days until your next birthday
  • What day is my birthday this year? Find the day of the week of your next birthday
  • Convert Gregorian dates to Julian Days
  • Convert a Gregorian calendar date to a Julian Day
  • Convert Julian Days to Gregorian Dates
  • Convert a Julian date number to a Gregorian calendar date string
  • Convert Gregorian dates to the Jewish or Hebrew calendar
  • Convert Gregorian dates to the Hijri or Islamic calendar
  • Convert Gregorian dates to the Maya calendar
  • Calculate the age & phase of the moon
  • Determine the date of Easter
  • Display the date of Easter for the current year
  • Find age in days and weeks
  • Learn how many leap years and full moons have passed
  • Understand the origin of the names for the months

Moon Phase for Sunday, August 18, 2019

Moon's age (days): 17.5
Distance (kilometers): 398,228
Distance (Earth radii): 64.51
Percent Illumination 91.87%
Ecliptic latitude / lambda (degrees): -4.92
Ecliptic longitude / beta (degrees): -1.63
Phase: Waning Gibbous