Julian Date Converter

Hi Arwen, I'm glad to hear you've kept up observing. Julian dates are one of those things were you need to remember a large series of exceptions to rules. I often use the USNO Julian Date Calculatorfor quick computation and a Python library when I'm doing a whole bunch of conversions. The USNO also has a nice description of the mathematics behind the calculation on this webpage whenever you're ready to check out the mathematics. See ya, Brian

Hi Brian, You were right! All the exceptions, and manditory things you have to do to get the JD manually is hard. Thanks for the UNSO link, it helped. I'll use it often. Also, we found out the JD,using the AAVSO website,but we were off by 0.2 day. I actually couldn't figure out what made my calculations incorrect. I went back and looked at my observations, I thought, oh I made my calculations wrong on my paper. When I was calculating the JD manually, that was the place where I actually made the mistake! i checked everywhere else. I would have to retry my calculations. Arwen

Hi Brian, You were right! All the exceptions, and manditory things you have to do to get the JD manually is hard. Thanks for the UNSO link, it helped. I'll use it often. Also, we found out the JD,using the AAVSO website,but we were off by 0.2 day. I actually couldn't figure out what made my calculations incorrect. I went back and looked at my observations, I thought, oh I made my calculations wrong on my paper. When I was calculating the JD manually, that was the place where I actually made the mistake! i checked everywhere else. I would have to retry my calculations. Arwen

Hi, that was me, but I was on my father account instead of mine, oops^! Arwen