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Author Topic: Figuring out the ZULU time  (Read 5703 times)
K7MEM
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« Reply #15 on: April 03, 2014, 08:01:50 PM »

If your running a Windows 7 system, you don't have to download anything. The clock in the task bar can contain two clocks. I have the local time and UTC displayed. Zulu is UTC and is not affected by daylight savings. Neither is Arizona time, which makes conversion really easy. I am always UTC-7. Although I have in the past been at UTC+0 and UTC+1.
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Martin - K7MEM

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N0IU
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« Reply #16 on: April 04, 2014, 03:51:32 AM »

I am a little confused in figuring out the time expressed in ZULU. If a contest runs from 1400Z to 2300Z what is the actual LOCAL time for people in California? Or in the NY area?

It depends on whether or not Daylight Saving time is in effect.
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KE5IUN
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« Reply #17 on: April 04, 2014, 06:44:45 AM »

Also, if you have a smart phone you can grab a free app that will tell you what UTC is based on whatever your current location is. I use "UTC " on my iPhone, Im sure there is a variant for android if thats what you use.
73!
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K8AXW
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« Reply #18 on: April 04, 2014, 07:05:22 AM »

SWMAN:  Bean time also extends air time.
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N4NYY
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« Reply #19 on: April 04, 2014, 08:46:09 AM »

I am a little confused in figuring out the time expressed in ZULU. If a contest runs from 1400Z to 2300Z what is the actual LOCAL time for people in California? Or in the NY area?

It depends on whether or not Daylight Saving time is in effect.

That is what confuses me. Whether I am in -4 or -5 time depending on DST. HRD had a Zulu time display. Hamclock also works. No questions any more.
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AA4PB
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« Reply #20 on: April 04, 2014, 09:34:11 AM »

Spring forward, fall back. In the spring the clocks move forward so the Eastern time gets closer to UTC or -4 hours. In the fall the clocks move back so the Eastern time gets more distant from UTC or -5 hours.
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AC5UP
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« Reply #21 on: April 04, 2014, 04:53:50 PM »

That is what confuses me. Whether I am in -4 or -5 time depending on DST.

The sun rises in the east.   As does the moon.    Why ??

Understand that and timezones will make more sense....... Including the + and - offsets from GMT.
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Never change a password on a Friday                
K7KBN
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« Reply #22 on: April 04, 2014, 05:55:44 PM »

Amy:  There is no "up" in space.

Penny:  Then how come the sun comes "up" every morning?
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73
Pat K7KBN
CWO4 USNR Ret.
N3DT
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« Reply #23 on: April 04, 2014, 06:46:17 PM »

If your running a Windows 7 system, you don't have to download anything. The clock in the task bar can contain two clocks..


Thanks, I didn't notice that.  But the alphaclock is nice too, but I haven't installed that one, don't have to now.
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K7MH
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« Reply #24 on: April 04, 2014, 10:42:34 PM »

Eventually you will just know what the UTC or local time conversion is without thinking about it.
It will take a while though.
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N6AJR
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« Reply #25 on: April 07, 2014, 09:26:31 AM »

I always get corn-fuzzed on this one so I have 2 digital clocks on the desk in the shack.  The one is set to show current time and day in pacific  time for California. ( with or with out daylight savings time included.) The other clock is set to show current day and time in  Zulu ( Or UTC or GMT depending on your age of reccognition ).  So the one I use to tell local time and the other I use for filling out logs and cards.  It works for me.  Both clocks were purchased from MFJ, and were fairly cheap.
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N1UK
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« Reply #26 on: April 07, 2014, 11:25:37 AM »

I have an MFJ 24hour clock set to GMT and a standard wall clock set to my local time.  My ham pc clock is set to GMT and that helps avoid logging errors  where the next GMT  calendar day starts at 8:00 pm local summer time and 7:00 pm local winter time.

As a quick look up  guide I created a 3 column word table with a GMT column, Summer Time column and Winter Time column for my QTH. I have a a data row for 00:00 GMT through to 23:00.



Mark N1UK
« Last Edit: April 07, 2014, 11:28:30 AM by N1UK » Logged
W6CD
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« Reply #27 on: April 11, 2014, 09:50:35 PM »

Well, what about half time?


klc

The microwave people?   Grin
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KD0REQ
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« Reply #28 on: April 12, 2014, 11:04:09 AM »

we have it easy in the US.  if you're in central time zone, add 6 hours to get Zulu.  5 in Daylight Savings Time.  adjust as necessary in other time zones.

it's even easier in England, add 0.
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KD4LLA
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« Reply #29 on: April 13, 2014, 02:45:32 PM »

I use an "add-on" called "FoxClocks".  It shows up unobtrusively in the lower part of your browser window, like a taskbar.  I have six time zones plus GMT/ UTC showing right now.  It adjusts itself for daylight or standard time.

Mike
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