With comprehensive information about calendar systems, time zones, historical periods, notable recurring events and more, Wolfram|Alpha is a powerful assistant for questions about dates and times at school, business or home. Get detailed scientific information about ancient geological eras; count down to holidays or other significant events; convert between time zones, calendars and time formats; compute differences between dates or times; or explore useful and fun information about dates, from historical events to corresponding birthstones.
Calculate the current time or a length of time and compute the difference between dates.
Generate custom calendars and convert dates between calendar systems.
Find information about a single recurring event or compare multiple events.
Get the Unix encoding for any time or date.
Learn about flowers and flower families traditionally associated with each month.
Find out the time zone of any city and learn generally about each specific zone.
Compute prayer times and Qibla direction for any date and location.
Learn the dates of significant events or find out what important things happened on a given date.
Learn about geological eons, eras, periods or epochs and their corresponding time frames.
Search for the specific names or gifts associated with any particular wedding anniversary.
Compute the time until a specific holiday or find the date on which a holiday occurred during any given year.
Find out when and where notable people were born or find out who passed away on any specific date.
Learn what birthstones correspond to each month or to specific dates.