<think>

Okay, I need to answer the user's question in Spanish based on the provided source. The source says the maintenance window is Saturday from 02:00 to 04:00 UTC. The user wants the answer under 40 words. Let me make sure I get the details right.

First, the maintenance is on Saturday. The start time is 2:00 AM UTC and ends at 4:00 AM UTC. So the duration is 2 hours. The user probably needs to know when the system will be down. I should include the date as well, but the source only mentions Saturday. Maybe assume the same week? Or does the date matter? The original input doesn't have a specific date, just the day of the week. So maybe just state Saturday between 02:00 and 04:00 UTC.

Wait, the instruction says to use the given source. The source doesn't have a date, just the day. So the answer should be concise. The user might need to know the time in UTC. Also, under 40 words. Let me check the word count. "La ventana de mantenimiento es sábado de 02:00 a 04:00 UTC." That's under 40 words. Maybe add that the system will be unavailable during that period. But the original source doesn't specify actions, just the time. So the answer should exactly state the time and day as given. No extra info. Keep it exact andUnder 40 words. Yes, that should work.

</think>

La ventana de mantenimiento es sábado de 02:00 a 04:00 UTC. El sistema estará inactivo durante este horario.