import pandas as pd

sales = pd.DataFrame(
    {
        "sold_at": [
            "2026-06-17 08:15",
            "2026-06-17 11:40",
            "2026-06-18 09:05",
            "2026-06-18 13:10",
            "2026-06-18 18:30",
            "2026-06-19 10:20",
        ],
        "revenue": [120, 95, 180, 245, 400, 160],
    }
)
sales["sold_at"] = pd.to_datetime(sales["sold_at"])