When is Your Birthday?

It’s Only Orbits, On Any Other Planet, it Would be Different

How Old are You on Other Planets?

Your Birthday: (mm/dd/yyyy)

Version 1.0

10 Responses to When is Your Birthday?

  1. Joanne says:

    Pam- this is AWESOME!!!! May I use it in my classroom?

  2. Pam Hoffman says:

    Of course you may Joanne! Share with anyone you like. We’ll be making improvements and we have some other ideas too. When that happens, I’ll let you know!


    Pam Hoffman
    EverydaySpacer at gmail dot com

  3. Pingback: There’s an App for That! | Everyday Spacer

  4. Neat! This would be especially fun for kids…

  5. Pam Hoffman says:

    We’ll be sharing on the Carnival of Space this week. Feel free to share with anyone you know who might enjoy this!

    Thanks Steve!

    Pam Hoffman
    EverydaySpacer at gmail dot com

  6. Hem Desh says:

    Hi Pam,

    I live in NH, I couldn’t find any cool meetup group like yours, so I was trying to join you on meetup. Meantime I found this website. I must tell you that I loved your website. Recently I have been fascinated by astronomy. I started to thing what it could be out there? That has inspired me joining you on meetup.

    This tool based on date of birth is cool. As I understand, year is orbital period of a plant moving in its orbit around the Sun. My question to you in that respect is, when you calculate year of that planet, don’t you then the days also should be shown in respect to that planet? For example “Mercury: you are nnn years and ppp.pp Earth days old.” but actually the term should be “Mercury: you are nnn years and ppp.pp Mercury days old.” This is just what I think, I am not a astronomy expert, just started thinking (not reading) about it. Could you please let me know if I am right or wrong.

    Thank you

  7. Pam Hoffman says:

    Hey Hem!

    I sent your message along to our experts to learn more. Donald lives in NH and Jeff wrote the program that returns back the orbits.

    If you don’t hear from them soon, let me know and I’ll ask them for help again!

    Glad you are enjoying our Everyday Spacer online resources. You are welcome to join the meetup nearest you. We are working on our own events to provide a profit to keep expanding our meetups to bring one (or more) to a city near you!

    One thing I know is that Mercury orbits the Sun every 88 of our days. We use our ‘day’ because a ‘day’ on Mercury is over one hundred of our days long.

    “Mercury is gravitationally locked and rotates in a way that is unique in the Solar System. As seen relative to the fixed stars, it rotates on its axis exactly three times for every two revolutions it makes around the Sun.[c][13] As seen from the Sun, in a frame of reference that rotates with the orbital motion, it appears to rotate only once every two Mercurian years. An observer on Mercury would therefore see only one day every two years.” ~Wiki

    You pose an excellent question because when we get out there to live, work and play beyond the influence of the Earth, how will we count such things as days and years? That is something we must figure out at some point.

    Come back any time and let other people know that they can personally and directly get involved with space and astronomy and we can show you how!

    Pam Hoffman
    EverydaySpacer at gmail dot com

  8. Nice little web app. It can give children a personal connection to the Universe.

  9. Pam Hoffman says:

    Thanks Matthew! I think it will give anyone another way to think about things. The personal connection is certainly part of our mission!

    Pam Hoffman
    EverydaySpacer at gmail dot com

  10. Joline Godfrey says:

    Can any one explain the ‘three body problem’ for the layperson?

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