Three times a day is: t.i.d. (Latin "ter in dies").
There does not seems to be a suggested symbol or abbreviation for "month."
It can be spelled out.
For "year," the NIST Style Guide suggests "a" (Latin: "annus"). Or it
can be spelled out.
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On Tue, 6 May 2014, Pierre Abbat wrote:
On Monday, May 05, 2014 10:20:27 Mark Henschel wrote:
"Three times a day?" said my friends brother. "It was three times a month!"
What *is* the symbol for a month?
For that matter, I've seen both "a" and "y" for year, and both have problems
(ignoring what exact definition of year you mean, if you need to specify): "Gy"
and "Pa" are symbols for other units.
Pierre