Some specialized devices can be used as early as eight weeks., though 12 weeks into pregnancy is a more normal time frame. (verywellfamily.com)
TAKE NOTE: From Update 13 Sep 2010 ************************* As an alert, we will be generating anomalies when the December data have been processed to be based on the 30 - year mean annual cycle of 1981 - 2010 to match the 30 - year normal time frame of many meteorology anomalies. (junksciencearchive.com)
From Kyle at Crossing Broad: Just old messaging he hasn't updated, they will deliver in a normal time frame. (sbnation.com)