Final answer:
The best Spanish translation for 'The parties are at 5:30 PM.' is 'Las fiestas son a las 5:30 PM'.
Step-by-step explanation:
The English sentence 'The parties are at 5:30 PM.' can be best translated into Spanish as 'Las fiestas son a las 5:30 PM'. In Spanish, the verb 'son' is used to show the time of an event. 'Las fiestas' is the correct Spanish term for 'the parties' while '5:30 PM' is understood universally across languages. Therefore, putting it all together, we have 'Las fiestas son a las 5:30 PM' as the most accurate translation.
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