Author: PK

PK started DQYDJ in 2009 to research and discuss finance and investing and help answer financial questions. He's expanded DQYDJ to build visualizations, calculators, and interactive tools. PK lives in New Hampshire with his wife, kids, and dog.
Daylight Hours Graph Calculator - Annual Daylight Variation Chart

Track annual daylight patterns for any location worldwide with this interactive daylight hours graph calculator. Compare multiple cities, visualize seasonal […]

Read More
Interactive Day Night World Map with Real-Time Terminator

Wondering what parts of Earth are experiencing a sunrise, sunset, or even the deep night right now? Our interactive day/night […]

Read More
Moon Phase Calculator: Calendar, Path, Special Events

Below, find an interactive moon phase calculator showing lunar phases, illumination, moonrise/set times, and special moon events for any location […]

Read More
Solar Panel Angle Calculator - Find Your Optimal Tilt by Location

Our solar panel angle calculator takes the guesswork out of panel positioning, suggesting panel tilt angles based on your location's […]

Read More
Solar Tracker Map - Real-Time Sun Position & Day/Night Visualization

Track the sun's position across Earth in real-time with this interactive solar tracker map. Click to get instant sun data, […]

Read More
Golden Hour Calculator - Photography's Magic Hour Times

The Golden Hour Calculator finds times when the sun is between -4° and +6° above the horizon, creating warm, golden […]

Read More
Blue Hour Calculator - Find the Perfect Blue Hour Times

The Blue Hour Calculator finds the magical blue hour times when the sun is between -6° and -4° below the […]

Read More
Sunrise Sunset Calculator - Golden Hour, Blue Hour & Daylight Tracker

Below, find an interactive sunrise sunset calculator displaying exact sun times for any location worldwide. See today's sunrise, sunset, solar […]

Read More
World Clock - Live Time in Major Cities Worldwide

On this page, you'll find a live world clock displaying current time in major cities around the globe, with real-time […]

Read More
The DQYDJ Weekender 7/6/2025

Hey folks! Hope you had an excellent Fourth of July (that statement holds worldwide) and are having an incredible summer. […]

Read More
1 2 3 144

Don't Quit Your Day Job...

DQYDJ may be compensated by our partners if you make purchases through links. See our disclosures page. As an Amazon Associate we earn from qualifying purchases.
Sign Up For Emails
linkedin facebook pinterest youtube rss twitter instagram facebook-blank rss-blank linkedin-blank pinterest youtube twitter instagram