Editing Talk:2266: Leap Smearing

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Although to be fair, leap seconds are confusing. [[User:Unpopular Opinions|Unpopular Opinions                                          ]] ([[User talk:Unpopular Opinions|talk]]) 04:08, 11 February 2020 (UTC)

Leap seconds are idiotic. The only people who care about keeping the Earth tied to the time are astronomers. And no one cares about them.[[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 04:56, 11 February 2020 (UTC)
:Oh, you'll care about leap seconds when your GPS starts failing, i assure you. [[Special:Contributions/141.101.107.204|141.101.107.204]] 07:08, 11 February 2020‎ (UTC)
:GPS does NOT have leap seconds.  That's why GPS time is drifting away from UTC.  It's off by about 19 seconds now, since 1980.  However, people would care eventually, when the time on the clock doesn't match up with the solar day (as pointed out by the next comment.) It would take a long time, but why get started off on the wrong foot? [[Special:Contributions/108.162.238.125|108.162.238.125]] 14:39, 12 February 2020 (UTC)
:Leap seconds are a mess, but so is changing the definition of UTC and letting it drift away from solar time. There are movements to try to make this change, but there are significant obstacles. (For example, the signatories to the 1884 International Meridian Conference agreed that the civil time everyone should use is based on mean solar time, and US Federal Law indicates that the legal time of the US is based on mean solar time.) [[User:Zmatt|Zmatt]] ([[User talk:Zmatt|talk]]) 06:30, 11 February 2020 (UTC)
::If we don't use leap seconds, then the GPS won't use them either. How many seconds difference before we humans could even notice? A century's worth or more, I'm certain. By then we could just fix the wobble of the Earth. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 07:33, 11 February 2020 (UTC)
:::1. You use “we humans”, who do you think is studying and correcting with leap seconds? Robots? 2. I don’t think you realize just how quickly that would cause problems. [[User:Netherin5|“That Guy from the Netherlands”]] ([[User talk:Netherin5|talk]]) 12:52, 11 February 2020 (UTC)
:Leap seconds are added rougly every couple of years. If we stopped, it would take about a century to be off by a minute, and 6,000 years to be off by an hour. So maybe we should just plan on every 6K years we skip Daylight Saving Time to recover that hour. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 16:26, 11 February 2020 (UTC)
::For half a year, then we're back to the situation we were ignoring. ;)  ((Obviously, what we might need to do is move the Prime Meridian, send it on a very slow "world tour" by passing it onto the next suitable city. But I'm a bit of a conservative when it comes to historic locations, so we should just put Greenwich Observatory on [[w|Mortal_Engines|wheels]], or [[w|Inverted_World|rails], if necessary.)) [[Special:Contributions/162.158.154.139|162.158.154.139]] 23:37, 11 February 2020 (UTC)

I believe the actual time would be 11:42am (on the 11th of February). [[User:Dakranon|Dakranon]] ([[User talk:Dakranon|talk]]) 06:20, 11 February 2020 (UTC)
:But the comic was released on 10t February Monday as always, but the date was written wrongly on the comic here. I have treid to calculate the time on February 10th. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 08:21, 11 February 2020 (UTC)

I think there is an error in the calculations given in the explanation, but it's possible some bistromathics got involved instead.  By my reckoning, 24 hours smeared over 28 "days" make each "day" 24/28 hours (≈&nbsp;51&nbsp;minutes, 26&nbsp;seconds) longer than a day instead of 24/29.  Also, conveniently for my calculations, the end of "14&nbsp;February" should be exactly halfway through the month, meaning the CEO should have until exactly noon on the 15th to get away with the given excuse (12 extra hours, not 11). [[Special:Contributions/172.69.33.239|172.69.33.239]] 10:27, 11 February 2020 (UTC)
:Thanks for correcting my attempt. As I wrote in the incomplete tag I was not sure I did it right. 

You guys are all missing the point!  We should apply  non-leap smearing to the other 11 months so that EVERY month has 28 days.  No more crazy calendar day-shifting: if you were born on a Monday(e.g.) your birthday will always be Monday.  [[User:Cellocgw|Cellocgw]] ([[User talk:Cellocgw|talk]]) 15:06, 11 February 2020 (UTC)
: Or {{w|Dayworld_(novel_series)|go even further}}... [[Special:Contributions/162.158.155.92|162.158.155.92]] 17:04, 11 February 2020 (UTC)
::Actually we should do as the hobbits in Tolkien's Lord of the Rings. They run 28 day months, 13 of them instead of 12 and that gives 364 days. I cannot remember the details correctly, but it is something like they then have a New Year day every year, and a leap day every four years after New Years day. The Year starts on a Monday as do all months. The New Year day (and Leap days) are not given any Weekday, so after Sunday 28th of December (or what the last month would be called) there are one or two days, without a weekday assigned, and the new year begins on Monday. It would all be soooo much more easy, but of course if you where born on a Monday you would always have your birthday on a Monday! ;-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:01, 12 February 2020 (UTC)

As of [https://www.explainxkcd.com/wiki/index.php?title=2266:_Leap_Smearing&oldid=187134 right now], I feel like the explanation is a bit of a mess. I already understand this comic but IMO someone who doesn't would not be able to follow this explanation. I think a better structure would be:
# Briefly explain what leap seconds are, since most readers will not know about them.
# Explain the "smear second" approach, and mention how the resulting time deviates by only half a second at the worst time.
# A line like "This comic suggests taking the smear second approach and applying it to leap days"
# Brief explanation/reminder of what leap days are - most readers will be familiar with this concept already, and those that don't can click on a Wikipedia link to read more.
# Explanation of how bad the results would be (some math here), the resulting date&time would be off by 24 hours at the worst time (end of Feb 29 will appear as the end of Feb 28). It's not 12 hours because unlike the smear second, the smear period will not be centered around the leap day but rather the leap day will be at the end of the smear period (which is all of February). Also mention exactly what the clock would show on the day of this comic's publication, and what the in-comic time actually is.

--[[User:NeatNit|NeatNit]] ([[User talk:NeatNit|talk]]) 19:00, 11 February 2020 (UTC)
:I guess this has happened more or less now? --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 12:01, 12 February 2020 (UTC)

This would violate the NTP 500ppm maximum slew rate, right? ;) {{unsigned ip|173.245.54.89}}

I really wish this was an interactive comic, with the Time changing throughout the month... [[Special:Contributions/172.69.68.209|172.69.68.209]] 16:59, 12 February 2020 (UTC) Sam