9月9日是美国最常见的生日, 9 September is the most common US birthday due to increased births in July-September months.

9月9日是美国最常见的生日, 9月19日和12日紧随其后。 September 9th is identified as the most common birthday in the U.S., with September 19th and 12th following. 这一趋势与7月、8月和9月出生人数增加有关,原因是节日期间怀孕率提高。 This trend correlates with increased births in July, August, and September, attributed to higher conception rates during the holiday season. 8月是最常见的出生月,而2月是最少的出生月。 August is the most common birth month, while February sees the fewest births. 此外,各种餐厅为奖励会员提供生日免费礼物,包括星巴克和丹尼. Additionally, various restaurants offer birthday freebies for rewards members, including Starbucks and Denny's.