Sunrise & Sunset Times in Round Rock, TX
Today's exact sunrise, sunset, and daylight hours for Round Rock, Texas. Plus solar noon, civil twilight, and golden hour times — calculated from Round Rock's coordinates (30.51° N, 97.68° W).
About sunrise and sunset in Round Rock
Round Rock, TX sits at 30.51° N latitude in the subtropical zone. The longest day of the year here lasts about 14h 0m (around the summer solstice in June), while the shortest day shrinks to 10h 0m — a year-round swing of 3h 54m. Because Round Rock is in the eastern part of the Chicago time zone, solar noon arrives roughly 31 minutes after clock noon.
Subtropical — distinct but mild seasonal swing. The sun rises roughly east, swinging northeast in summer and southeast in winter, and sets roughly west, swinging northwest in summer and southwest in winter. Civil twilight (the period when the sun is between 0° and 6° below the horizon) lasts approximately 32 minutes around the equinoxes — a noticeable extended dawn and dusk window.
Quick facts for Round Rock
Solar noon offset reflects Round Rock's position in its time zone — the further from the time zone's standard meridian, the further the actual midday drifts from 12:00 on the clock.
Sunrise & Sunset in Round Rock
Today's sunrise and sunset times in Round Rock, TX. See exact sunrise, sunset, and daylight hours for Round Rock. Updated daily.
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Sunrise and sunset FAQ for Round Rock
How accurate are the Round Rock sunrise and sunset times?
Times are calculated using NOAA-grade astronomical algorithms based on Round Rock's exact coordinates (30.5083, -97.6789) and time zone (America/Chicago). Accuracy is typically within 1 minute. Local horizon obstructions (mountains, tall buildings) can shift the visible sunrise/sunset by a few minutes compared to the calculated value.
How long is the longest day of the year in Round Rock?
At Round Rock's latitude of 30.51° N, the longest day stretches to about 14h 0m on the June solstice. The shortest day, on the December solstice, is around 10h 0m — a year-round swing of roughly 3h 54m.
When is golden hour in Round Rock?
Golden hour in Round Rock occurs in the ~60-minute window after sunrise and before sunset, when the sun is low (typically below 6° elevation) and light is softer and warmer. Photographers favour this window for portraits and landscapes. The exact start/end depends on the season — golden hour is shorter near the equinoxes and longer in winter when the sun travels at a shallower angle.
Do Round Rock sunrise times change with daylight saving time?
Yes. All times shown here use Round Rock's local clock, which switches between standard time and daylight saving time on the dates set by US federal law (second Sunday in March, first Sunday in November). The actual position of the sun does not change — only the clock face does. See our Daylight Saving Time guide for the next change date.
In which direction does the sun rise and set in Round Rock?
In Round Rock, the sun rises in the east, swinging northeast in summer and southeast in winter, and sets in the west, swinging northwest in summer and southwest in winter. On the equinoxes (around 20 March and 22 September), the sun rises due east and sets due west. Between those dates, the sunrise/sunset points shift along the horizon as Earth's axial tilt changes the sun's declination.
What is solar noon, and when does it happen in Round Rock?
Solar noon is the moment the sun is at its highest point in the sky for the day. In Round Rock, solar noon arrives roughly 31 minutes after clock noon, because Round Rock sits in the eastern partof its time zone. The exact offset shifts a few minutes through the year due to Earth's elliptical orbit (the "equation of time").