If he cannot begin the construction on time, he should propose the extension request to the assignor ahead of 30 days, but the time can't exceed a year utmost.

不能按期开工建设的，应提前30日向出让人提出延建申请，但延建时间最长不得超过一年。

youdao

Schreimann decided this new extension request was unreasonable, and refused to sign.

FORBES: What statute of limitations?

Federal estate tax returns are due nine months after the date of death unless you request an extension.

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Taxpayers may request an extension if they can demonstrate a good faith attempt to comply by August 31st.

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