Star Date 2019?
Should we refer to date 2019 as Star Date 2019, as our concept of date is defined by the position of the Earth relative to the Sun, our Star.
-------------------------------------------------------
answers:
Ronald 7 say: Yes
Now beam us up Scotty
-
average say: People from the 1980s
-
Clive say: That is NOT what it is defined by. Do that if you want but realise that this year is 2019 because it is 2019 years after when the monk Dionysus Exiguus calculated Jesus was born. (Which is almost certainly wrong - it's a few years too late - but we're stuck with it now.) There are plenty of other calendars that use a different starting point. In the Muslim calendar, it is currently the year 1440. And according to Jews, it's 5779. Take your pick. Christianity just happens to be the world's majority religion so we use 2019.
The position of the Earth relative to the Sun defines the seasons, NOT what year it is.
-
Bill-M say: Our calendar is based on a religious event and is adjusted to keep in sync with the movement of the Earth around the Sun
-
poldi2 say: Our concept of date is defined by the calendar which is only indirectly related to the position of the Earth relative to the sun.
But if you want to call it Star Date 2019 that's fine - that means ONE term to refer to 365 days.
-
Raymond say: A "star date" is a day count (not a year count), based on a "comoving" time (the time at Greenwich, on Earth, at the time of an observation (inserted in the ship log, for example), corrected for the distance.
It is not the time on Earth as seen from the spaceship (which would be delayed by the time it takes light to travel from Earth to the ship), but the time you would see if you could see the Earth as it is now, not when the light started from there. In Star Trek, this is done by coordinating the on-board clock using sub-space communication (which is instantaneous).
In our Gregorian calendar (a correction of the AD calendar developed by the monk Dionysius Exiguus -- then corrected under pope Gregory XIII) we begin the year on January 1, which is the first day of the first month following winter solstice.
The year number is ordinal.
We have not spent 2019 years since the birth of Christ (AD = Anno Domini), but rather this is the 2019th year since the birth. Many cultures still use ordinal numbers for the year.
(ordinal numbers are first, fifth, twelfth and so on)
The tropical year (the one on which we base our calendar) is NOT based on the position of the Earth relative to the Sun, but on the cycle of Solar declination (the Sun's declination as seen from Earth). This is to make sure that the seasons match the calendar, not the apparent position of the Sun relative to the constellations (that is why astrology is now off by more than one constellation).
-
jehen say: No, at least not based on how we actually determined the year number. The year of the common era was set by the catholic church based on birth of Christ. The lunar calendars of Judaism and Asia are much older and have bigger year numbers. Also, the current period of 1 solar year is not based on our star, it is based on the period of the Earth's orbit around the star. So it's not a star-date. It's an Earth/Religion date. Since science doesn't like to invoke religion in their labels, and just about the whole world uses the church-based Gregorian calendar the official 'date' name is CE - Common Era.
-
christina say: interesting
-
Petter say: Why would you call it star date? This is not Star Trek. "Lap number 2019 around the sun, after Jeebus died" would be better then, no?
-
William say: Nope, Star Trek has its influence but Jesus Christ rules our calendars.
We astronomers, however, often use Julian dates, Barycentric Julian Date (BJD)
-
Ronald 7 say: Yes
Now beam us up Scotty
-
CarolOklaNola say: No, The Gregorian calendar is based on a religious supposedly historical event, not the position of the Earth relative to the Sun. Not all calendars are solar calendars. There are 18 or more types of calendars. If we were using the Jewish calendar, which is a lunar calendar, today's date is Adar 18, 5779.
False premise. Your facts are very uncoordinated.
And there are different eras of star dates for each Star Trek series, according to the Wikipedia article on stardates which is correct. I am an Original Old School Trekkie. If the Calendar was based on Earth's position relative the Sun,, 2019 would have started on January 2/or 3. February 6 was the Chinese New Years. That is a lunar calendar.
-