美國全國廣播公司(NBC)總部在美國紐約(NYC)。紐約市處於美國東部時間區(ET)即國際標准時間西五區(GMT-5區)。我們處於北京時間區即國際標准時間東八區(GMT+8區)。紐約(NYC)與北京之間的時差是13個小時。
需要注意的是：本節目、本帖資源文件標注的均為美國東部時間(ET)。本片“美國當日晚間播出的節目”，是我們與NBC同步在網絡上收到並上傳發布的。NBC官網每天網上放源時間為美國東部時間(ET)晚上6：50，也就是北京時間早上7：50。
本帖基本就是 NBC Nightly News 在當地電視台播出後幾小時內，被我“同步”在這裡了。與通過衛星同步收看相比，這幾小時的差距，其實就是我用在下載、編輯、上傳的時間。

NBC Nightly News is the daily evening news program for NBC News and broadcasts from the GE Building, Rockefeller Center in New York City. It has been known by this name since August 3, 1970. Currently, weekday broadcasts are anchored by Brian Williams, and weekend editions of the show are anchored by Lester Holt. The program originates from NBC's Studio 3C, which is connected to the network's central newsroom. On weeknights, it is broadcast live over most NBC stations from 6:30 to 7:00 p.m. Eastern Time and occasionally updated for Pacific Time Zone viewers in a "Western Edition." Its current theme music was composed by renowned composer John Williams. As of 2009, it has been the highest rated newscast in America for over a decade.