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Two, it's called "daylight saving time" (not savings). You make it sound like a bank where you can withdraw a little extra on a rainy day.

Google shows 317K hits for "daylight savings time" compared to 321K hits for "daylight saving time". Given the fuzziness of Google, and the human propensity to drop the last letter of a word, you could argue either way.

I personally have only heard "savings", and that's what I use.

I suppose your personal usage depends on whether you prefer the verb "saving" over the noun "savings". Or if you agree with the usage problem noted in some dictionaries, then similar phrases like Woodchip Savings Area should be Woodchip Saving Area. Unless you're just stockpiling Woodchips there, and they don't actually get saved there, so it might be more accurate to describe it as a Savings Area.

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