wrote:
On Jul 7, 7:29 am, "HeyBub" wrote:

Hmm. 12:00PM implies twelve hours past midday (p.m. = "post meridian" = past
midday). That would be midnight. From there to 7:46PM means the ac has been
on for almost twenty hours.

Of course one could also say 12:00AM (a.m. = "ante meridian" = before
midday) which would also be midnight.

Sorry, 12:00PM is noon. Have a High School diploma?? Is English your
native language??

I have a high school (and college) diploma. Yet, I don't think everything
I heard in high school (or college) is automatically true. In particular,
2000 wasn't the first year of the new millenium, and 12:00 PM is not noon.

Here's an explanation of why:

http://tf.nist.gov/timefreq/general/...m#Anchor-57026

Note that this comes from NIST, the National Institute of Standards
and Technology, which is the US federal government agency responsible
for standardizing measurements. These are the people who operate
NIST-F1, the atomic clock which is the primary reference for timekeeping
in the United States, and one of the primary references worldwide.

- Logan