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O'Reilly spreads the knowledge of innovators through its technology books, online services, magazines, research, and tech conferences. Since 1978, O'Reilly has been a chronicler and catalyst of leading-edge development, homing in on the technology trends that really matter and galvanizing their adoption by amplifying "faint signals" from the alpha geeks who are creating the future. An active participant in the technology community, O'Reilly has a long history of advocacy, meme-making, and evangelism.
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This service calculates the duration, counting the day count and the number of days, months and years between two dates. Among other things, it can be used find how many days old you are and the weekday you were born. Also see the advanced duration calculator which supports time as well.
Date Duration Calculator: Days between two dates
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