Time Perspective

  • 1 million seconds: About 11.5 days
  • 1 billion seconds: About 31.7 years (you've probably lived through one!)
  • Average lifespan: ~2.5 billion seconds or ~28,000 days

Fun Calculations to Try

  • Your exact age: Enter your birthday → get your age in days, hours, even seconds
  • Relationship milestone: How many days since you met your partner/best friend?
  • Career duration: First day at work → today = your exact tenure
  • 10,000 hours: Malcolm Gladwell's mastery threshold—when did you/will you hit it?
  • Moon landing: July 20, 1969 → now (over 20,000 days ago!)
  • Your 10,000th day alive: A milestone most people don't know about (~age 27)

Business & Legal Uses

  • Invoice aging: Invoice date → today = days outstanding (Net 30, 60, 90)
  • Contract terms: Start → end = exact contract duration for billing
  • Warranty check: Purchase date → now = is it still under warranty?
  • Employee tenure: Hire date → today for anniversary bonuses, vesting
  • Statute of limitations: Event date → filing deadline calculations

Project Management

  • Sprint length: Confirm your sprints are exactly 2 weeks (14 days)
  • Release countdown: Days until launch = remaining workdays at a glance
  • SLA tracking: Incident start → resolution = SLA compliance check
  • Vacation planning: Days between trips, or days until your next vacation
  • Deadline reality: 'Due in 3 weeks' = only 15 weekdays of actual work!

Historical Time Spans

  • Unix Epoch (Jan 1, 1970) → now: The basis of all computer timestamps
  • Y2K (Jan 1, 2000) → now: A quarter century since the 'millennium bug'
  • iPhone launch (Jun 29, 2007) → now: The smartphone era's exact age
  • COVID-19 lockdowns (Mar 2020) → now: How long has it really been?
  • Your favorite movie/album release → now: Feel old yet?

Why Months Are Weird

  • Months have 28, 29, 30, or 31 days—so '1 month' is ambiguous
  • February is shorter because Romans considered it unlucky
  • July and August both have 31 days because emperors had egos
  • This tool calculates month differences by actual calendar months, not 30-day periods
  • For precise billing, use days or hours instead of months

Time Unit Conversions

  • 1 day = 24 hours = 1,440 minutes = 86,400 seconds
  • 1 week = 168 hours = 10,080 minutes
  • 1 year = 365.25 days (accounting for leap years) = 8,766 hours
  • 1 decade = 3,652.5 days ≈ 87,660 hours
  • 1 century = 36,525 days = 876,600 hours = 52.6 million minutes