Related Clues:

• Get dark, perhaps
• Get dark, formally
• Go past midnight, say
• Near midnight, say
• Move toward day's end
• Approach closing time
• Approach dark
• Approach bedtime
• Get darker outside
• Grow toward night
• Approach the wee hours
• Draw toward dark
• Cause to miss a deadline
• Grow toward evening
• Grow nearer to bedtime