Setting Time From Gps On The Camera - Canon GP-E2 Instruction Manual

Setting Time from GPS on the Camera

You can set the time from GPS when the receiver is attached or
connected to a camera that displays the [GPS device settings] menu
item (except on the EOS 7D). The EOS-1D X performs high-precision
adjustment with a margin of error of approx. ±0.02 second relative to
UTC time. With other cameras, the margin is approx. ±1 second.
If the GPS signal cannot be received from five or more satellites, time
setting is not possible. [Set now] will be unavailable.
Even if [Set now] is selected, auto time adjustment may not be possible,
depending on the timing of GPS signal acquisition.
When [Auto time setting] is set to [Auto update], the date and time
cannot be set manually using [Date/Time/Zone] in the menu.
If you prefer not to change the time (when using [Sync time between
cameras] with WFT series, for example), select [Auto time setting:
Disable].
1
Select [GPS device settings].
On the EOS-1D X and other models
that display the following screen, set
[GPS device] to [Enable], and then
select [GPS device settings].
2
Select [Auto time setting].
Select an option and press <0>.
[Auto update] updates the time after
the camera and the receiver are
turned on and a GPS signal is
received.
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