Date Calculator: Add to or Subtract From a Date
The Date Calculator adds or subtracts days, weeks, months and years from a given date.
The Solar Century: Landmark Moments in the History of Solar Energy
Since the creation of the first silicon solar cell 70 years ago, solar leaders have been innovating, improving efficiency, lowering costs, and growing this American-born technology into an
Business Date Calculator: Add/Subtract Workdays, Holidays or
Add or subtract any number of days to/from a date, taking into account public holidays in your country and weekends.
The forgotten 20th Century ''Sun engine''
The world''s first solar power station was built before World War One, created by a man with a vision for cleaner air.
The History of Solar
First Solar begins production in Perrysburg, Ohio, at the world''s largest photovoltaic manufacturing plant with an estimated capacity of producing enough solar panels each year to generate 100 megawatts
Photovoltaic Power Station: What It Means for Your
The first photovoltaic power station was built by Arco Solar at Lugo near Hesperia, California with 14 megawatts capacity and opened on December 7, 1980. See
The First Solar Power Plant: 1916
Shuman built the world''s first solar thermal power station in Maadi, Egypt (1912-1913). Shuman''s plant used semicircle shaped troughs to power a 60-70 horsepower engine that pumped
The Solar Energy Revolution: A Timeline of its Evolution
1983 – The first-megawatt solar power plant was completed in California. 1991 – The United States Department of Energy (DOE) installed solar
Watch the history of solar power in the United States
The modern solar power industry in the United States was launched in the wake of the energy crisis of the late 1970s when skyrocketing oil prices
The World Clock — Worldwide
World time and date for cities in all time zones. International time right now. Takes into account all DST clock changes.
Meeting Planner – Find best time across Time Zones
Use the World Clock Meeting Planner to find a suitable time to have a telephone conversation, web cast, or meeting with participants in many time zones.
Countdown Timer to Any Date
Create a Countdown Timer that counts down in seconds, minutes, hours and days to any date, with time zone support. It also counts up from a past date.
Calendar 2026
Calendars – online and print friendly – for any year and month and including public holidays and observances for countries worldwide.
They built a solar plant across farmland until they discovered
A massive solar power plant in Northern Texas has been monitoring how several endangered species are thriving directly underneath the solar panels.
Online Timer with Alarm
Online Timer with Alarm Create your timers with optional alarms and start/pause/stop them simultaneously or sequentially. They are perfect for everyday activities such as cooking meals, taking
Time Duration Calculator: Time between two dates/times
Time Calculator: Duration Between Two Times and Dates How many years, months, days, hours, minutes, and seconds are there between two moments in time?
The History of Solar Energy: From Past to Present
In 1839, Becquerel was the first person to discover the photovoltaic effect, the phenomenon where sunlight is converted into electricity. This
Date Duration Calculator: Days Between Dates
The Duration Calculator calculates the number of days, months and years between two dates.
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