what time do you need them to wake up by? I put my kids to bed at 8:30pm, but that's because i need them to wake up by 8:30am. I would say whatever works for you, but most babies need 11-12 hours of sleep a night.
My kids bedtime routine started at 7:00 at that age and they were usually in bed around 7:20. Around a year old, their bedtime changed to 8:00. I don't move their bedtime to 8:00 until they start to seem like they are having trouble falling asleep before 7:30. I keep their bedtime at 8:00.