Sunrise · Sunset Time Calculator한국어

Sunrise & Sunset Time Calculator

Choose a location and date to compute sunrise, sunset, solar noon, and twilight with astronomical formulas — no external API. See which spot catches the first sunrise.

🎆 New Year Sunrise Countdown

Until next New Year sunrise 173 days left

📍 Location

📅 Date

(Sun)

🌅 Seoul

2026-07-12 (Sun)

All times shown in Korea Standard Time (KST)

🌅 Sunrise

05:20

🌇 Sunset

19:55

☀️ Solar noon

12:38

⏱️ Day length

14h 34m

🌄 Twilight & Details

🌆 Civil dawn

04:50

🌉 Civil dusk

20:25

📐 Noon altitude

74.4°

⚓ Nautical dawn

04:12

⚓ Nautical dusk

21:03

📸 Golden hour (AM)

04:55~05:45

📸 Golden hour (PM): 19:30~20:20

🏆 Sunrise Spot Ranking (Earliest First)

Locations across Korea sorted by sunrise time (earliest first) for the selected date.

RankPlaceSunrise
1 · EarliestDokdo🌊05:02
2Jeongdongjin🌊05:12
3Chuam Rock🌊05:12
4Gangneung🏙️05:12
5Homigot🌊05:14
6Pohang🏙️05:15
7Chuncheon🏙️05:17
8Ulsan🏙️05:17
9Ganjeolgot🌊05:17
10Busan🏙️05:18
11Daegu🏙️05:19
12Seoul🏙️05:20
13Cheongju🏙️05:21
14Suwon🏙️05:21
15Incheon🏙️05:22
16Daejeon🏙️05:22
17Jeonju🏙️05:24
18Yeosu🏙️05:25
19Hyangiram🌊05:25
20Gwangju🏙️05:27
21Mokpo🏙️05:30
22Ttangkkeut🌊05:31
23Seongsan Ilchulbong🌊05:31
24Jeju🏙️05:33
25Marado🌊05:35

Method & accuracy

  • 🧮 Computed in-browser with the NOAA solar-position algorithm (Julian day → solar declination & equation of time → latitude-based hour angle). No external API.
  • 📐 Sunrise/sunset use a 90°50' zenith (34' refraction + 16' solar radius). Civil twilight 96° · nautical 102°.
  • 🕘 Time zone: Korea Standard Time (KST, UTC+9), no daylight saving.

※ Elevation and atmosphere are approximated, so results may differ from official KASI values by seconds to tens of seconds. For official purposes, check KASI or the KMA.

Learn more · bal.pe.kr tools

See the Guide for how it works, the FAQ for common questions, and About for data and accuracy. Guide · FAQ · About. Last updated 2026-07-11.