In a published decision, the Ninth Circuit deferred to the Board of Immigration Appeals' decision in Matter of Camarillo. In so doing, it determined that service of a Notice to Appear, even if the Notice to Appear is missing the time and date of the first hearing, is sufficient to invoke the "stop-time" rule, and the non-citizen will cease to accrue continuous physical presence for the purpose of cancellation of removal.
The full text of Moscoso-Castellanos v. Lynch can be found here: http://cdn.ca9.uscourts.gov/datastore/opinions/2015/10/13/12-72693.pdf