diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9011b6d..23032ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,3 +9,7 @@
 2. 新增：公历日获取公历周。
 3. 修复：公历半年、公历季度、公历时刻推移的错误。
 4. 修复：公历季度初始化的错误。
+
+## [1.0.3] - 2024-06-06
+1. 新增：节气第几天。
+2. 优化：枚举。
diff --git a/src/enums/FestivalType.php b/src/enums/FestivalType.php
index 414e984..ab9ac50 100644
--- a/src/enums/FestivalType.php
+++ b/src/enums/FestivalType.php
@@ -29,25 +29,25 @@ function getName(): string
 
     static function fromCode(int $code): FestivalType
     {
-        return match (true) {
-            $code == 0 => self::DAY,
-            $code == 1 => self::TERM,
-            $code == 2 => self::EVE,
+        return match ($code) {
+            0 => self::DAY,
+            1 => self::TERM,
+            2 => self::EVE,
             default => null
         };
     }
 
     static function fromName(string $name): FestivalType
     {
-        return match (true) {
-            $name == '日期' => self::DAY,
-            $name == '节气' => self::TERM,
-            $name == '除夕' => self::EVE,
+        return match ($name) {
+            '日期' => self::DAY,
+            '节气' => self::TERM,
+            '除夕' => self::EVE,
             default => null
         };
     }
 
-    function equals(Side $o): bool
+    function equals(FestivalType $o): bool
     {
         return $this->value == $o->value;
     }
diff --git a/src/enums/Gender.php b/src/enums/Gender.php
index ca3606f..bf7a240 100644
--- a/src/enums/Gender.php
+++ b/src/enums/Gender.php
@@ -27,23 +27,23 @@ function getName(): string
 
     static function fromCode(int $code): Gender
     {
-        return match (true) {
-            $code == 0 => self::WOMAN,
-            $code == 1 => self::MAN,
+        return match ($code) {
+            0 => self::WOMAN,
+            1 => self::MAN,
             default => null
         };
     }
 
     static function fromName(string $name): Gender
     {
-        return match (true) {
-            $name == '女' => self::WOMAN,
-            $name == '男' => self::MAN,
+        return match ($name) {
+            '女' => self::WOMAN,
+            '男' => self::MAN,
             default => null
         };
     }
 
-    function equals(Side $o): bool
+    function equals(Gender $o): bool
     {
         return $this->value == $o->value;
     }
diff --git a/src/enums/Side.php b/src/enums/Side.php
index 5494902..b83039a 100644
--- a/src/enums/Side.php
+++ b/src/enums/Side.php
@@ -27,18 +27,18 @@ function getName(): string
 
     static function fromCode(int $code): Side
     {
-        return match (true) {
-            $code == 0 => self::IN,
-            $code == 1 => self::OUT,
+        return match ($code) {
+            0 => self::IN,
+            1 => self::OUT,
             default => null
         };
     }
 
     static function fromName(string $name): Side
     {
-        return match (true) {
-            $name == '内' => self::IN,
-            $name == '外' => self::OUT,
+        return match ($name) {
+            '内' => self::IN,
+            '外' => self::OUT,
             default => null
         };
     }
diff --git a/src/enums/YinYang.php b/src/enums/YinYang.php
index ce36634..593d9c7 100644
--- a/src/enums/YinYang.php
+++ b/src/enums/YinYang.php
@@ -27,18 +27,18 @@ function getName(): string
 
     static function fromCode(int $code): YinYang
     {
-        return match (true) {
-            $code == 1 => self::YANG,
-            $code == 0 => self::YIN,
+        return match ($code) {
+            1 => self::YANG,
+            0 => self::YIN,
             default => null
         };
     }
 
     static function fromName(string $name): YinYang
     {
-        return match (true) {
-            $name == '阳' => self::YANG,
-            $name == '阴' => self::YIN,
+        return match ($name) {
+            '阳' => self::YANG,
+            '阴' => self::YIN,
             default => null
         };
     }
diff --git a/src/solar/SolarDay.php b/src/solar/SolarDay.php
index b2727fd..32e8e11 100644
--- a/src/solar/SolarDay.php
+++ b/src/solar/SolarDay.php
@@ -184,12 +184,24 @@ function isAfter(SolarDay $target): bool
      * @return SolarTerm 节气
      */
     function getTerm(): SolarTerm
+    {
+        return $this->getTermDay()->getSolarTerm();
+    }
+
+    /**
+     * 节气第几天
+     *
+     * @return SolarTermDay 节气第几天
+     */
+    function getTermDay(): SolarTermDay
     {
         $term = SolarTerm::fromIndex($this->month->getYear()->getYear() + 1, 0);
-        while ($this->isBefore($term->getJulianDay()->getSolarDay())) {
+        $day = $term->getJulianDay()->getSolarDay();
+        while ($this->isBefore($day)) {
             $term = $term->next(-1);
+            $day = $term->getJulianDay()->getSolarDay();
         }
-        return $term;
+        return new SolarTermDay($term, $this->subtract($day));
     }
 
     /**
diff --git a/src/solar/SolarTermDay.php b/src/solar/SolarTermDay.php
new file mode 100644
index 0000000..9b9791f
--- /dev/null
+++ b/src/solar/SolarTermDay.php
@@ -0,0 +1,29 @@
+<?php
+
+namespace com\tyme\solar;
+
+
+use com\tyme\AbstractCultureDay;
+
+/**
+ * 节气第几天
+ * @author 6tail
+ * @package com\tyme\solar
+ */
+class SolarTermDay extends AbstractCultureDay
+{
+    function __construct(SolarTerm $solarTerm, int $dayIndex)
+    {
+        parent::__construct($solarTerm, $dayIndex);
+    }
+
+    /**
+     * 节气
+     *
+     * @return SolarTerm 节气
+     */
+    function getSolarTerm(): SolarTerm
+    {
+        return $this->culture;
+    }
+}
diff --git a/test/SolarTermTest.php b/test/SolarTermTest.php
index 16a79f7..08834aa 100644
--- a/test/SolarTermTest.php
+++ b/test/SolarTermTest.php
@@ -66,4 +66,17 @@ function test3()
     {
         $this->assertEquals('寒露', SolarDay::fromYmd(2023, 10, 10)->getTerm()->getName());
     }
+
+    function test4()
+    {
+        // 大雪当天
+        $this->assertEquals("大雪第1天", SolarDay::fromYmd(2023, 12, 7)->getTermDay()->__toString());
+        // 天数索引
+        $this->assertEquals(0, SolarDay::fromYmd(2023, 12, 7)->getTermDay()->getDayIndex());
+
+        $this->assertEquals("大雪第2天", SolarDay::fromYmd(2023, 12, 8)->getTermDay()->__toString());
+        $this->assertEquals("大雪第15天", SolarDay::fromYmd(2023, 12, 21)->getTermDay()->__toString());
+
+        $this->assertEquals("冬至第1天", SolarDay::fromYmd(2023, 12, 22)->getTermDay()->__toString());
+    }
 }