Duration 1:00

Tracking Time: The Julian to Gregorian Calendar Transition Explained | Neil Degrasse Tyson 1159

by Eye Opener

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Published 28 May 2023

Join Neil deGrasse Tyson on the Joe Rogan Experience as he delves into the fascinating history of the Julian and Gregorian calendars. Discover how the leap day and the subtle differences in tracking Earth's seasons led to the need for calendar modifications. Learn about the role of Jesuit priests in developing the accurate and widely-used Gregorian calendar, including the bold move of removing ten days from the calendar. Gain insights into the astronomical considerations and the significance of timekeeping in this thought-provoking discussion.

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Comments - 133

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@exatasdev157911 months ago For context, joe asked what was tyson' s birthdate. 296
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@november13211 months ago Imagine you have an assignment due in 11 days and now it' s due tomorrow. 65
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@kenarbes11 months ago Isaac asimov wrote that he lost some days when russia changed calendars. He wanted those days back. 31
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@matthewhegarty72911 months ago And because of that change, my wife (born on feb 29th) and mother-in-law have battled for 39 years over what day to celebrate my wifes birthday on non-leap years. 7
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@georgegreene874411 months ago He' s explaining that entirely wrong. The amount of time it takes us to go around the sun and return to the same solstice (or equinox) is exactly one . ...Expand 17
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@YTRulesFromNM11 months ago The vernal equinox was originally april 1st and that was the beginning of the year. People that believed the year should start at the vernal equinox were called april fools. No, i' m not kidding. This really happened. 73
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@Leisurelee5311 months ago Fun fact. Julius caesar was poltifex maximus while on campaign in gaul. His office was responsible for tracking and correcting the then calendar to account one of the first things caesar did as dictator was bring a famous mathematician from alexandria and create the julian calendar.
bro exploited the game then immediately patched it. ...Expand 32
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@theMightyWhytey11 months ago No, the biggest change in the julian calendar was that the pontifus maximus (who at that time was julias ceasar) couldn' t add days in for political reasons (ceasar was a master at this) because it hurt the calendar. 3
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@thethirdjegs11 months ago It is easier to explain that the julian calendar has too many leap years because 1 year is not equal to 365. 25 days. That slight difference in the hundredths now the gregorian calendar do not make leap years in the years that ends with 00 but are indivisible by 400. ...Expand 2
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@chodeshadar1810 months ago The jewish calendar has been adding a leap month according to a certain schedule, because exodus says passover must always fall in the spring. This has been in use for about 20 years. 1
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@Egilhelmson11 months ago The roman calendar with which julius caesar started was legally alterable by senate vote at whim; a good month according to the pontiffs (a group of politically . ...Expand 1
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@PvblivsAelivs11 months ago Moved january and february to the front of the year. Got rid of intercalary months. I believe it also adjusted the length of the months. 1
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@Telssa111 months ago I figured out how to do the rain man' s day of the week trick, for the julian and the gregorian from 01/1/01 onwards. Takes me a second or two.
there' s a challenge for anyone who fancies it. 1
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@accountforcommenting10 months ago Can you make video on other calenders, like the one we use in india. 1
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@arealbigboss11 months ago Neil seems like hed be great at parties, but really it would be a massive pain getting stuck with the guy who wants to explain everything. 4
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@havan5611 months ago The time it takes the aert to go around the sun is t 365. 256days. 25 is handled by the leap day but that. 006 did accumulate, hence the need for the id="hidden10"gregoian adjustment. Now leap years aren' t recognized in every year divisible by 4, only in years that is a multiple of 4 (except for years evenly divisible by 100, but not by 400). ...Expand
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@anudeep32706 months ago If we take other calendars as reference. Its hard to calculate ecclipses timingsastronomicalaccurate
gregorian accounts the leap years and timings.
(only who knows about time can understand this). ...Expand
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@jkmil498111 months ago And when thay said we' re going to skip the counting of ten days to make the calendar right, a lot of people thought that they were having the dats stolen from them
at least most of them were actually illiterate. ...Expand 1
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@Steve-sg3uz11 months ago Never let them tell you that the religious don' t do science. In fact the catholic church is responsible for practically making science a thing. 6
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@Zanenoth11 months ago Julius and augustus both wanted a month and added july and august to the gregorian calendar. It' s why december means 10 but is thr 12th month. Idk what tysons on about lol. Its like he' s just skirting over this. 1
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@granadosvm11 months ago Jesuit priests do the work, pope gregory stamps his name in the improved calendar.
sounds like every day management to me. 7
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@BawkBawkBawk66611 months ago Joe: when' s your bday?
neil:
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@botwitaprice11 months ago This is why the leap year has one day added, which is why february has 29 days instead of 28 days. 1
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@69hunter5511 months ago Joe originally was just asking him when will he pays him back for that 10 bucks neil borrowed years ago. 2
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@maxberntsen443010 months ago What about the original 10 months?
sept=7
oct=8
nov=9
dec=10
julius augustus caesar. July august.
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@kravmagoo952710 months ago I have a question. I don' t watch or listen to jre, except on yt. One thing i do know is that ndt is on the show a lot. Does joe have a tyson tuesday or something?
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@sskmanentsa532611 months ago What if the problem was not the seasons, but the holidays? Using the moon or sun or stars to create a calendar that correlates with our beliefs, we will . ...Expand
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@Developer88811 months ago So basically everyones age before 1584 was actually older because we removed 10 days, that really screws up the mathematics, also if the julian calendar was right that means we are actually younger by 10 days per year.
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@danlorett218411 months ago To put this in perspective: they created a calendar accurate for at least 100 years while they still thought the sun orbited the earth. 3
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@rockitss11 months ago These smart guys really are the disinformation kings imagine what the world could create if they were educated with the truth and were prepared or even allowed to share it with the world. 4
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@lionelsammy60894 months ago Hi mr. Neil, may i ask why u havent made any vid about indian calendar? And the invention of the number 0 by indians?
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@mikeagate11 months ago Baloney! So a quarter of a day makes all the difference between winter and summer?
here in the uk we still have to put the heater on 5 june 2023! why does such aman come up with crap like this?. ...Expand 1
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@iGamezRo9 months ago The julian calendar is still used by some parts of the easter orthodox church.
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@Sparkfist11 months ago The question was what dating format does he prefer.
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@magnusjensson819911 months ago Do you know of orsteins surtur calender? It was rather precise. 3
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@fabulousfabricationsimmacu496211 months ago When is your birthday, how much time you got?
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@berts55811 months ago So if you' re trying to figure out somebody' s birthday who was born before 1584 you' re going to need to know this to figure out what day they eg. Sir isaac newton was born on christmas day what is birthday was by the modern calendar january 4th i believe. ...Expand
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@TheInator123411 months ago So we switched from tracking how long it takes to go around the sun, to tracking seasons changing. What causes the seasons to change again?
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@roguecheddar625211 months ago (from animal house)
gigantic dude: do you mind if we dance with your dates?
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@DatsiKxModz11 months ago So are we actually living more in the future?
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@hlp4ever9810 months ago Here he goes again. Mr overdramatic who tries to shock us with simple facts that we learned in junior high school if we paid attention.
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@rangerstl0711 months ago The process of going around the sun results in one extra revolution of the earth.
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@JIMJAMSC11 months ago Anybody else getting really tired of these " rock starrunning around with their " i' m smart" let me spout off some reading comprehension skills? The michio ku is annoying also.
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@rusbea.227911 months ago Stop the discussion and use the iranian calendar already!
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@BoushoC11 months ago That' s not true, it' s the difference between days and orbits. Not seasons.
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@dragons_red11 months ago This is the worst explaination of anything by someone who makes their living explaining things.
and ngt just answered the question " how do . ...Expand
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@robertsmith295611 months ago We need a leap month to get the seasons back inline with the calendar months.
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@reginaldinoenchillada351311 months ago Damn, dude. I don' t even have the attention span to make it thru a short clip.
sorry ndt i' m out. Its u it' s not me.
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@John___Vegas11 months ago Or you throw out all thebased calendars, and start using the logical 13 month calendar. The current calendars are simply stupid.
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@otnath7 months ago And even the gregorian calendar is wrong, lol.
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@lewischasen11 months ago Seriously. What about modern day was not influenced by passive aggressive paganism. Think about it. Halloween, santa, april fools, days of the week id="hidden23" are based off of norse gods, king arthur is actually christian cuchulainn, ect. ...Expand
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@userbasba11 months ago I think ndt got his info all wrong.
the islamic hijri calendar is the most accurate.
ain' t that right, ndt?
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@DeerlyMusical211 months ago The jewish calendar has remained unchanged since about 900 ad. And it' s correct, i believe, to about1 second. Sorry, pope gregory.
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@bradfordrusso748010 months ago Your omniscient perroration is idiotically illogical. Of course the cyclic orbit and the seasons co-incide. Careful listening to your exact words reveals . ...Expand
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@YigithanTamer-ej9ui4 months ago Smug popular science guy impresses everyone with a mix of pure misinformation and some half-truths.
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@pannonia7711 months ago One mistake: the gregorian calender was introduced in 1582. 1
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@richardcrow304211 months ago It' s when you look up and realize they all have pagan names. Silly cretin.
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@mikesnapper900111 months ago " i just him asked what today' s date was "
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@beatlejuice1311 months ago Its still off. Were going to have to skip a month at some point.
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@danielhill366510 months ago Who were the jesuitz priest sounds wickidly evilish.
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@jankom.778311 months ago Calendars before that also accounted for that problem - by not having any months for a quarter of a year. In terms of accuracy, that is still superior solution.
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@CrashBox9111 months ago So in regular ppl language we' re f***d.
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@DLites15111 months ago Wait till you learn about the vedic calendar. 1