这是我的链接：
http://timezonedb.com/download
timezone.csv
Fields: "zone_id","abbreviation","time_start","gmt_offset","dst"
"370","CDT","-273686400","-18000","1"
"370","EST","-266432400","-18000","0"
"370","EDT","-52938000","-14400","1"
"370","EST","-37216800","-18000","0"
"370","EDT","-21488400","-14400","1"
"370","EST","-5767200","-18000","0"
"370","EDT","9961200","-14400","1"
"370","EST","25682400","-18000","0"
"370","EDT","41410800","-14400","1"
"370","EST","57736800","-18000","0"
正如你所看到的，它给出了与时间相关的数据作为一个大数字，我怎样才能将它转换为格式“utc + 5:30”小时......
谢谢