7.0 Impact of date of manufacture stamps on the servicing of portable fire extinguishers Portable fire extinguishers are typically serviced in accordance with AS 1851, which requires a five-yearly hydrostatic pressure testing (six-yearly if using AS 1851-1995).s such, the date of manufacture stamp may be found anywhere on a portable fire extinguisher cylinder, including its base. 4.2 When is a cylinder stamped with the date of manufacture and what does this mean? For cylinders to AS1841.1, the date stamp indicates âthe date of manufactureâ f or the cylinder.
Assuming a white Christmas is having at least one inch of snow on the ground December 25th, the chances are 60% or better over an area including much of the northern Rockies, the northern Great Plains, the Great Lakes area, and most of New England.
The Christmas tree in Rockefeller Center is usually lit toward the very end of November or early December (this year it's November 30 but the date for 2012 has not yet been announced). So, if you are in NYC between November 14th and the 19th you may see some decorations but the city will not be fully dressed out.