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This move discussion was suppose to have been closed on December 2012, as it was merged with Talk:June solstice#Requested move, but apparently this was not properly done so. [1]] Feel free to restart a new requested move discussion, as page moves from "December" and "June" back to "Southern" and "Northern" solstice, respectively, will now be viewed as controversial (likewise with proposals to move the current March equinox and September equinox article titles to "northward" and "southward"). Thanks. Zzyzx11 ( talk) 04:07, 31 July 2013 (UTC)
Southern solstice → December solstice – The solstice occurs in the Northern Hemisphere and Southern Hemisphere, and the references say "December solstice" 70.24.250.110 ( talk) 00:44, 3 December 2012 (UTC)
*'''Support'''
or *'''Oppose'''
, then sign your comment with ~~~~
. Since
polling is not a substitute for discussion, please explain your reasons, taking into account
Wikipedia's policy on article titles.There is a move discussion in progress on Talk:Northern solstice which affects this page. Please participate on that page and not in this talk page section. Thank you. — RMCD bot 05:14, 3 December 2012 (UTC)
It is very difficult to find the exact times of solstices and equinoxes, to better than a minute of resolution -- and therefore hard to resolve discrepancies in various sources. On the day of 2015 December Solstice, common media sources are stating 22dec15 at either 4:48 or 4:49 UTC/GMT. Which is more accurate?
NORTHERN Year Date DoW Time TDB SOUTHERN Delta T Est Winter 2015 Dec 22 Tue at 04:49:04 Summer +01m 09s
Using that engine yields:
Ephemeris Type [change] : OBSERVER Target Body [change] : Sun [Sol] [10] Observer Location [change] : Geocentric [500] Time Span [change] : Start=2015-12-22 4:47:55, Stop=2015-12-22 4:48:05, Intervals=20 Table Settings [change] : QUANTITIES=1,9,20,23,24,30,31 Display/Output [change] : default (formatted HTML) 2015-Dec-22 04:47:57.000 68.183653 269.9999909 -0.0001291 2015-Dec-22 04:47:57.500 68.183653 269.9999968 -0.0001291 2015-Dec-22 04:47:58.000 68.183653 270.0000027 -0.0001291 2015-Dec-22 04:47:58.500 68.183653 270.0000086 -0.0001291 Date__(UT)__HR:MN:SC.fff CT-UT ObsEcLon ObsEcLat
Which leads to:
2015-Dec-22 04:47:57.271 68.183653 269.9999941 -0.0001291 2015-Dec-22 04:47:57.771 68.183653 270.0000000 -0.0001291 2015-Dec-22 04:47:58.271 68.183653 270.0000059 -0.0001291 Times are UTC (not UT1). The dynamical Coordinate Time scale is used internally. It is equivalent to the current IAU definition of "TDB".
Giving a final result of:
In conclusion, 4:47:58 and 4:48 UTC is the proper rounded time; 4:49 seems somewhat wrong, for any general usage.- 71.174.188.32 ( talk) 17:38, 21 December 2015 (UTC)
The English speaking world seems to be limited to approximate Solstice and Equinox times, to about the nearest minute.
The French offer a more precise, to the second, master table:
2013 20 11:01:55 21 05:03:57 22 20:44:08 21 17:11:00 2014 20 16:57:05 21 10:51:14 23 02:29:05 21 23:03:01 2015 20 22:45:09 21 16:37:55 23 08:20:33 22 04:47:57 2016 20 04:30:11 20 22:34:11 22 14:21:07 21 10:44:10 2017 20 10:28:38 21 04:24:09 22 20:01:48 21 16:27:57 2018 20 16:15:27 21 10:07:18 23 01:54:05 21 22:22:44 Références : mars • juin • sept. • déc. Institut de mécanique céleste et de calcul des éphémérides
Most WP readers do not care about this -- but some might like access to the more accurate times. How can we provide such access in a good way? Would we ever want to replace our template master table with a more-precise master table of times? - 71.174.188.32 ( talk) 19:17, 22 December 2015 (UTC)
The diagrams https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Gregoriancalendarleap_solstice.svg/190px-Gregoriancalendarleap_solstice.svg.png are for the June Solstice. Similar diagrams for the December Solstice would be interesting, and relevant. 173.174.85.204 ( talk) 16:17, 21 December 2016 (UTC)Eric
![]() | A fact from this article was featured on Wikipedia's Main Page in the On this day section on 12 dates. show |
![]() | This article is rated Start-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||
|
This move discussion was suppose to have been closed on December 2012, as it was merged with Talk:June solstice#Requested move, but apparently this was not properly done so. [1]] Feel free to restart a new requested move discussion, as page moves from "December" and "June" back to "Southern" and "Northern" solstice, respectively, will now be viewed as controversial (likewise with proposals to move the current March equinox and September equinox article titles to "northward" and "southward"). Thanks. Zzyzx11 ( talk) 04:07, 31 July 2013 (UTC)
Southern solstice → December solstice – The solstice occurs in the Northern Hemisphere and Southern Hemisphere, and the references say "December solstice" 70.24.250.110 ( talk) 00:44, 3 December 2012 (UTC)
*'''Support'''
or *'''Oppose'''
, then sign your comment with ~~~~
. Since
polling is not a substitute for discussion, please explain your reasons, taking into account
Wikipedia's policy on article titles.There is a move discussion in progress on Talk:Northern solstice which affects this page. Please participate on that page and not in this talk page section. Thank you. — RMCD bot 05:14, 3 December 2012 (UTC)
It is very difficult to find the exact times of solstices and equinoxes, to better than a minute of resolution -- and therefore hard to resolve discrepancies in various sources. On the day of 2015 December Solstice, common media sources are stating 22dec15 at either 4:48 or 4:49 UTC/GMT. Which is more accurate?
NORTHERN Year Date DoW Time TDB SOUTHERN Delta T Est Winter 2015 Dec 22 Tue at 04:49:04 Summer +01m 09s
Using that engine yields:
Ephemeris Type [change] : OBSERVER Target Body [change] : Sun [Sol] [10] Observer Location [change] : Geocentric [500] Time Span [change] : Start=2015-12-22 4:47:55, Stop=2015-12-22 4:48:05, Intervals=20 Table Settings [change] : QUANTITIES=1,9,20,23,24,30,31 Display/Output [change] : default (formatted HTML) 2015-Dec-22 04:47:57.000 68.183653 269.9999909 -0.0001291 2015-Dec-22 04:47:57.500 68.183653 269.9999968 -0.0001291 2015-Dec-22 04:47:58.000 68.183653 270.0000027 -0.0001291 2015-Dec-22 04:47:58.500 68.183653 270.0000086 -0.0001291 Date__(UT)__HR:MN:SC.fff CT-UT ObsEcLon ObsEcLat
Which leads to:
2015-Dec-22 04:47:57.271 68.183653 269.9999941 -0.0001291 2015-Dec-22 04:47:57.771 68.183653 270.0000000 -0.0001291 2015-Dec-22 04:47:58.271 68.183653 270.0000059 -0.0001291 Times are UTC (not UT1). The dynamical Coordinate Time scale is used internally. It is equivalent to the current IAU definition of "TDB".
Giving a final result of:
In conclusion, 4:47:58 and 4:48 UTC is the proper rounded time; 4:49 seems somewhat wrong, for any general usage.- 71.174.188.32 ( talk) 17:38, 21 December 2015 (UTC)
The English speaking world seems to be limited to approximate Solstice and Equinox times, to about the nearest minute.
The French offer a more precise, to the second, master table:
2013 20 11:01:55 21 05:03:57 22 20:44:08 21 17:11:00 2014 20 16:57:05 21 10:51:14 23 02:29:05 21 23:03:01 2015 20 22:45:09 21 16:37:55 23 08:20:33 22 04:47:57 2016 20 04:30:11 20 22:34:11 22 14:21:07 21 10:44:10 2017 20 10:28:38 21 04:24:09 22 20:01:48 21 16:27:57 2018 20 16:15:27 21 10:07:18 23 01:54:05 21 22:22:44 Références : mars • juin • sept. • déc. Institut de mécanique céleste et de calcul des éphémérides
Most WP readers do not care about this -- but some might like access to the more accurate times. How can we provide such access in a good way? Would we ever want to replace our template master table with a more-precise master table of times? - 71.174.188.32 ( talk) 19:17, 22 December 2015 (UTC)
The diagrams https://upload.wikimedia.org/wikipedia/commons/thumb/e/ee/Gregoriancalendarleap_solstice.svg/190px-Gregoriancalendarleap_solstice.svg.png are for the June Solstice. Similar diagrams for the December Solstice would be interesting, and relevant. 173.174.85.204 ( talk) 16:17, 21 December 2016 (UTC)Eric