The contract takes effect since the date signed by both buyer and constructors.

本合同自买方和建造方签署之日生效。

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This contract takes effect on the date signed by both parties and will automatically expire when the contract ends.

本合同自双方签字之日起生效，合同期满时自动终止。

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This contract shall take effect on the date signed by both parties and shall be automatically invalidated when it expires.

本合同自双方签字之日起生效，合同期满即自行失效。

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Congress granted the 3 year bar against assessment of additional tax by IRS on the presumption that the return filed by the taxpayer was true and correct, as to every material matter, on the date the taxpayer signed and filed his return.

FORBES: IRS Lacks Statutory Authority to Extend Time to Assess Tax

To date, Definity has signed up 18, 000 employees (42, 000 members including dependents), up from 2, 500 employees in 2001.

FORBES: Give Them A Stake

To date SMS GupShup has signed up 30 million users and now buys network capacity to send roughly 1 billion text messages a month, as much as 8% of the SMS text traffic in India.

FORBES: Magazine Article