import datetime
from datetime import timedelta, timezone


def get_sunday(date):
    return date - datetime.timedelta(days=date.weekday()) + timedelta(days=6)


def get_last_sunday_dates(number, include_current_week=True):
    now_utc = datetime.datetime.now(timezone.utc)
    today = datetime.datetime(now_utc.year, now_utc.month, now_utc.day)
    if include_current_week:
        days_to_last_sunday = (6 - today.weekday()) % 7
        last_sunday = today + datetime.timedelta(days=days_to_last_sunday)
    else:
        days_to_last_sunday = (today.weekday() - 6) % 7
        last_sunday = today - datetime.timedelta(days=days_to_last_sunday)
    last_n_sundays = []
    for i in range(number):
        sunday = last_sunday - datetime.timedelta(days=i * 7)
        last_n_sundays.append(sunday.date())
    return last_n_sundays