This Sunday morning the solar time come back again to mark the time
on our clocks.
The clocks back one hour isn't get to stop time, but if you get to live twice
in one night between 2:00 a.m. and 3:00 a.m. the same or different dreams and
/ or nightmares and it can be "fat liar" if the millions of computers around
the world don't keep their events according to a Universal Time:
UTC - Universal Time Coordinated (in
Wolfram|Alpha)
GMT - Greenwich Mean Time (in
Wolfram|Alpha)
As exemplified by the most used computer applications:
Wikipedia - Timezones in Unix and Windows
This failure happens to the phones with the Android operating system and
functionality of Google Calendar because that has a serious flaw in the
handling of time zones that can not be included as different time zones to
start and end dates of events, and because of this problem, many users of this
application have been losing flights and reservations and being unable to
attend events and conferences. Here are some links about this problem:
Google Calendar Forum
Is a lie that Google has answered us!
PCWorld - Is Google Calendar Time-Zone Challenged?
Wikipedia - Using the native Google Calendar functionality for Android
phones
Wikipedia - Google Calendar inability for time zones
Since the last Sunday of March, we enjoyed the summer time, getting up an hour
early and the evenings are longer, and the last Sunday in October we come back
to winter again, getting up an hour late and the evenings are shorter . In
some countries the delay of clocks and watches is the first Sunday in
November, as in Canada, Mexico and the United States, except Hawaii and
Arizona. In Peru, Japan or India, the clocks do not change throughout the
year.
These time changes for Europe are internationally known as:
Daylight Saving Time: CEST - Central European Summer Time or Savings Time (in
WolframAlpha)
Winter Time: CET - Central European Time (in
WolframAlpha)
For many, myself included, we would have liked the time change had been
extended throughout all the year instead of only in summer, so the evenings
are longer, but I fear that farmers will not agree with us and prefer to have
more sunlight in the morning and, for them, summer time is a nuisance.
Whoever wants to know when is
sunrise and sunset at any place or city in the world, knowing its
geographic coordinates, can download the following calendar that I prepared
for the occasion, in Excel without macros:
Programmable Task Calendar.xlsx
The calculation are based on
Astronomical Algorithms by Jean Meeus and
are posted on the NOAA page from which you can download Excel files with
algorithms:
ESRL Global Monitoring Division - GRAD Group
These calculations are valid only for dates between 1901 and 2099, due to the
approach used in the calculation of Julian Day.
Cities sheet contains
a table with 664 Spanish cities, which can be
expanded, with the latitude and longitude in decimal degrees, as in columns E
and F is the conversion of degrees and minutes to decimal degrees.
In the Solar sheet, the yellow cells can be modified, where the cell A4 is the
selected city. All calculations are based on the geographical coordinates of
the place, for what you can enter
the latitude and longitude in cells
B5 and C5.
The
Timezone must be entered in cell D3 as time difference from GMT.
In the case of Spain, the standard time is CET = GMT +1 (Cell D3 = 1) and
there is daylight summer time (CEST = GMT +2) for what used cells D9 to D13,
with corresponding dates in C9: C13 change from winter to summer and summer to
winter, which is the last Sunday of March and October, respectively:
If there is no daylight summer time setting in your city, put the cells D9 to
D13 to zero 0.
Remember to change the time on Sunday in Spain, at 3 am will be 2 am and this
weekend I will devote that hour to change all clocks at home. What fun!
Traducción al español
aquí.
No Response to "Changing the daylight saving time"
Leave A Reply
Indícame las erratas que encuentres y qué es lo que te gustaría ver en los próximos artículos.