From 201b76d9725df81c828845a59c9077c5d5854c6e Mon Sep 17 00:00:00 2001
From: We-unite <3205135446@qq.com>
Date: Thu, 13 Feb 2025 22:57:19 +0800
Subject: 无中气置闰，每个月的界限是按日，而非按朔的时刻
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---
 src/List.cpp     |  9 +++++++--
 src/calendar.cpp | 43 ++++++++-----------------------------------
 2 files changed, 15 insertions(+), 37 deletions(-)

diff --git a/src/List.cpp b/src/List.cpp
index b4600bc..67af9ce 100644
--- a/src/List.cpp
+++ b/src/List.cpp
@@ -1,4 +1,5 @@
 #include "calendar.h"
+#include <cstdio>
 
 List::List() {
     // 为方便初始化，链表头结点设为空节点，注意不要使用
@@ -116,8 +117,12 @@ void List::Run() {
     int i = 0, j = 0;
     int mon_index = 11;
     bool flag;
-    while (later(zhongqi_vec[12], shuori_vec[i])) {
-        i++;
+    point *p = head->next->next;
+
+    while (!(p->isZhongqi && p->JieqiIndex == 24)) {
+        if (p->isShuo)
+            i++;
+        p = p->next;
     }
 
     if (i == 13) {
diff --git a/src/calendar.cpp b/src/calendar.cpp
index dcb96d7..7f64baa 100644
--- a/src/calendar.cpp
+++ b/src/calendar.cpp
@@ -50,57 +50,30 @@ void JieQi(Date *date) {
         t = julian.getJulianKiloYear(time);
         t_end = julian.getJulianKiloYear(time + day);
 
-        //定春分
         if (target_angle == 0) {
-            /* 春分太阳地心视黄经为0，一般二分法不便于计算
-             * 因而限定范围为[355,360)∪(0,5]，即春分前后各5度
-             * 当t_end时刻太阳地心视黄经在[355,360)时，证明春分在后边，t和t_end前进24h
-             */
-            while (p.sun_longitude(t_end) < 360 &&
-                   p.sun_longitude(t_end) > 355) {
+            while (p.sun_longitude(t_end) > 300) {
                 time += day;
                 t = t_end;
                 t_end = julian.getJulianKiloYear(time + day);
             }
-            /* 循环体time每次在已经计算出的上一节气基础上前进12日，理论上春分在t_end之后
-             * 当跳出上一while循环时理论上春分时刻正在t与t_end之间
-             * 为保险起见，添加这个循环
-             * 当t时刻太阳地心视黄经在[0,5]时，证明春分在前边，t和t_end后退24h
-             */
-            while (p.sun_longitude(t) < 5) {
-                time -= day;
-                t_end = t;
-                t = julian.getJulianKiloYear(time);
+            if (!(p.sun_longitude(t) > 300 && p.sun_longitude(t_end) < 2)) {
+                fprintf(stderr, "Error: Can't find the target angle\n");
+                exit(1);
             }
-
-            //二分法计算春分
             while (t_end - t > delta) {
                 t_middle = (t + t_end) / 2;
-                if (p.sun_longitude(t_middle) < 360 &&
-                    p.sun_longitude(t_middle) > 355) {
-                    t = t_middle;
-                } else {
+                if (p.sun_longitude(t_middle) < 2) {
                     t_end = t_middle;
+                } else {
+                    t = t_middle;
                 }
             }
-        }
-        //其他情况
-        else {
-            //当t_end时刻太阳地心视黄经小于目标角度，节气在后，t和t_end前进24h
+        } else {
             while (p.sun_longitude(t_end) < target_angle) {
                 time += day;
                 t = t_end;
                 t_end = julian.getJulianKiloYear(time + day);
             }
-
-            //当t时刻太阳地心视黄经大于目标角度，节气在前，t和t_end后退24h
-            //该循环也是一个保险循环
-            while (p.sun_longitude(t) > target_angle) {
-                time -= day;
-                t_end = t;
-                t = julian.getJulianKiloYear(time);
-            }
-
             while (t_end - t > delta) {
                 t_middle = (t + t_end) / 2;
                 if (p.sun_longitude(t_middle) < target_angle) {
-- 
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