This special offer is valid until the end of the month.

这个特价优惠月底前有效。

《牛津词典》

The L/C remai valid until the 15th day after shipment.

信用证在装船淘宝怎么取消订单后15天内有效。

youdao

Your membership card is valid until the date shown on the front.

会员卡在上述截止日之前有效。

youdao

However, the UK Borders Agency has offered a temporary concession to Syrian students in the UK, which is valid until 15 March.

BBC: Syrian students face fees crisis

The company is the only one licensed to operate the route between the Channel Islands and the UK, with its licence valid until 2018.

BBC: Condor Vitesse

The parties return to court on August 13th, but the lawsuit will undoubtedly drag on for many months if not years until the issue of whether these two purported wills are valid is laid to rest.

FORBES: Did Artist Thomas Kinkade Change His Will While Drunk?