From 127259bccce157e79d29732f2cec4fdfe6ca2a74 Mon Sep 17 00:00:00 2001
From: liaoxinyu <liaoxinyu@xingtongworld.com>
Date: Wed, 19 Mar 2025 17:55:41 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=94=B9=E5=B8=81=E5=B8=81=E6=97=B6?=
 =?UTF-8?q?=E9=97=B4=E8=87=AA=E5=8A=A8=E5=8C=96=E8=BD=AC=E6=97=B6=E9=97=B4?=
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---
 pages/exchange/time-sharing.vue | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/pages/exchange/time-sharing.vue b/pages/exchange/time-sharing.vue
index 1324d28..b5720a6 100644
--- a/pages/exchange/time-sharing.vue
+++ b/pages/exchange/time-sharing.vue
@@ -101,10 +101,40 @@ export default {
           break;
       }
     },
+	
+	isDSTByRules() {
+	    const now = new Date();
+	    const year = now.getUTCFullYear();
+	    // 计算夏令时开始时间（3月第二个周日 2:00 AM EDT）
+	    const dstStart = this.getNthSunday(year, 2, 2, 2); // 月份从 0 开始（2=3月）
+	
+	    // 计算夏令时结束时间（11月第一个周日 2:00 AM EST）
+	    const dstEnd = this.getNthSunday(year, 10, 1, 2); // 月份从 0 开始（10=11月）
+	
+	    return now >= dstStart && now < dstEnd;
+	},
+	
+	// 辅助函数：获取某年第n个月的第m个周日（月份从0开始）
+	getNthSunday(year, month, occurrence, hour) {
+	    let date = new Date(year, month, 1);
+	    let count = 0;
+	
+	    while (true) {
+	        if (date.getDay() === 0) {
+	            if (++count === occurrence) {
+	                date.setHours(hour);
+	                return date;
+	            }
+	        }
+	        date.setDate(date.getDate() + 1);
+	    }
+	},
+	
     intiChart($box) {
+	  let timeData = this.isDSTByRules()
       highstock.setOptions({
         global: {
-          timezoneOffset: 4 * 60,
+          timezoneOffset: timeData ? 16 * 60 : 17 * 60,
         },
       });