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Iridium Time Change 2014 & Satellite Phone Programming

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UPDATE MARCH 3, 2015

Please follow the most current instructions below to update the time on your Iridium 9555 & Extreme

1) After the Iridium Time Re-Epoch Occurs (March 3, 2015) you can reset the time on your Iridium 9555 or Iridium 9575.

2) Dial *#99#2014051114235500# on an Iridium 9555 or Iridium Extreme (9575) satellite phone

3) Press the green key

4) Then power off/on.

JUNE 27, 2014

Iridium is rolling back the time change made on June 17th, 2014.  The roll back will happen on June 30th, 2014.  If you updated the time on your phone after June 17th you will have to do a manual update again.  If you have not changed the time on your phone since June 17th then nothing needs to be done, your time will go back to normal after June 30th, 2014.

**From Iridium***

Iridium is committed to the operation of ALL applications on our network. Therefore we made the decision to “roll back” or reset the Iridium LBand Counter back to the prior setting Era 1. Iridium is hereby providing advance notice of the “roll‐back” to all customers in order to allow adequate time for any technical preparations to occur in order to transition customers back to Era 1.

  • The activities to “roll back” the Iridium L‐Band counter will start on June 30th at 15:37:00 UTC
  • The Iridium L‐band counter start time will revert back to March 8th, 2007 3:50:21 UTC

Iridium plans to conduct the re‐epoch again in the 1st Quarter of 2015 and will provide additional guidance later this year, and you should consider this when preparing for the rollback.

Satellite Phone Impact
For Iridium Satellite Phone users, this epoch change on June 30th, 2014 will have no impact to service availability and the ability to successfully complete phone calls, SMS messages, or data services. This epoch change will impact Iridium Satellite Phones differently, depending upon whether they modified their epoch settings for the June 17th Era 2 as follows:


Iridium 9555 /
Iridium Extreme
June 17th – June 30thJune 30th – Q1 2015Corrective Action Required
for June 30th – Q1 2015
‐With prior Era 1 timeIncorrect Date/TimeCorrect Date/TimeNone
‐With new Era 2 timeCorrect Date/TimeIncorrect Date/TimeSetting change to Era 1 time
9505A, 9505, 9500
‐With prior Era 1 timeIncorrect Date/TimeCorrect Date/TimeNone
‐With new Era 2Correct Date/TimeIncorrect Date/TimeSetting change to Era 1 time

As referenced above, satellite phone users or inventory that was not updated to the new Era 2 time will revert to the correct date/time starting on June 30th (no action required). All inventory shipped from Iridium has been programmed with the Era 1 time, therefore will not require corrective action unless updated by the partner, reseller, or end user.

Satellite Phone Instructions
Satellite phone users or inventory that was updated to the new Era 2 time will require a setting change to comply with the new Era 1 time starting June 30th.

Iridium 9555 and Iridium Extreme® customers
Those that recently updated their Era settings can restore the correct time settings by following these steps after June 30th:
1. Dial *#99#2007030803502100#
2. Press the green key
3. Turn off/on their phone

*** Original Article***

In order to recalibrate Iridium network for ongoing service, the baseline time used to calculate the date and time displayed on Iridium's satellite phones is changing June 17, 2014 at 10:00 (EDT).  Aka "Iridium Time Epoch Change."

This will have no impact to service availability and the ability to successfully complete phone calls, SMS messages, or data services. However, the appearance of the time and date on the screen will reset to April 14, 2007 and 3:26 (EDT) until phone settings are adjusted to the new baseline time.

Settings must be changed after June 17, 2014 when this time change occurs.

Iridium 9555 and Iridium Extreme® customers:

These instructions are out of date, please follow the instructions at the top of the page.

  1. Dial *#99#2014051114235500#
  2. Press the green key
  3. Turn off/on your phone to restore the correct time settings.

Iridium 9500, 9505 and 9505A customers:

You will need to set the updated time and date from their phone menu.  The extended phone set-up menu must be set to "On" (see page 137 of Iridium 9505A user guide, page 149 of the Iridium 9500 user guide, or page 139 of the Iridium 9505 user guide), then follow these instructions to set time and date:

  1. Follow the steps in "Getting to Phone Setup.." to get to Set Time and Date, and then press OK to select.
  2. Press MENU to choose Set Home Time + Date or Set Away Time + Date, and then press OK.  You will see Enter Home Time or Enter Away Time and the time currently set.
  3. Press OK to accept the displayed time or Enter the time in 24-hour format, and then press OK.  You will see Enter Home Date or Enter Away Time and the date currently set.
  4. Press OK to accept the displayed date.  You will see Completed or Enter the date in day(dd)-month(mm)-year(yy) form and then press OK.  You will see Completed.
  5. Press and hold C to exit the menu.

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