Hi Ana,
Here's the timeline for the nanny we are looking to hire:
LMO: completed in February 2014
Application Submitted by nanny we are looking to hire (medical and all other requirements verified): July 1
Nanny Started Passport Renewal process: July 18
Nanny Received tracking ID: August timeframe
Checked online for status: "Your Passport Status": August Timeframe
Nanny Received Renewed Passport: September 26
Currently waiting on next step - Her Friends are starting to get their letters and applied a month earlier in June.
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Therefore the 4-5 month timeline seems to be holding true.
I will let you know as things proceed! Best of luck Ana.