Simply Explained: Summer Solstice, Winter Solstice and Equinox

Klaus Botta, 19.06.2021

The times of day and the seasons shape the daily lives of humans and animals and are of vital importance for our everyday lives. In spring as well as in the morning everything is on the rise; in autumn or in the evening the retreat begins. On September the 23rd 2019, the astronomical beginning of autumn and equinox, day and night will have the same duration. Klaus Botta has developed his 24-hour clocks UNO 24 and TRES 24 in line with this ideal time state.

24-hour watches show time in the most natural way

"In east, the sun will start the day, then go along the southern way, till it will set in west at night, from north you'll never see its's light." Almost everyone learned this or a similar mnemonic rhyme as a child to remember the path of the sun over the sky during the course of the day.

Just like the day, the UNO 24 or TRES 24 dial has 24 hours and the hour hand follows the course of the sun - in the morning it rises above the horizon, at noon it reaches its zenith and in the evening it descends again. At a single glance, the wearer intuitively grasps the entire day. The meticulously designed scale supports him. Especially with the UNO 24, because only one hand shows the time. The smallest lines on the scale stand for ten minutes. This makes it possible to estimate the time with the UNO 24 to at least five minutes.

24h One-hand watch UNO 24 Animation

Just as the day consists of a light and a dark phase, the dial of BOTTA's 24-hour watches is divided into a light and a dark half. A fine line at midnight also marks the transition from one day to the next. As soon as the hand crosses this line, the date changes and indicates the new day. In combination with three hands, the TRES 24 24-hour watch takes on a technical, instrumental character and becomes a very natural but at the same time very accurate timepiece.

At first glance, a wristwatch with a 24-hour display is rather unfamiliar. "A timepiece with a 24-hour scale and only one hand is the most logical of all watches," says Klaus Botta, owner of BOTTA design and developer of the 24-hour watches UNO 24 and TRES 24. The conventional 12-hour representation is merely an abstraction in favour of (supposedly) more convenient time recording.

See our collections: UNO 24 one-hand watch, TRES 24 three-hand watch and MONDO GMT.


1 comment


  • Glenn Woods

    I have about fifteen watches that I wear at different times depending on what I am going to do , sines I bought the Botta Uno 24 I haven’t taken it off which says a lot about how much I like it


Leave a comment


Additional posts


Mechanical watch vs. quartz watch - part 2: watches with electric movement.

In this 2nd part of the two-part article you will find interesting information about quartz watch...

Mechanical watch vs. quartz watch - Part 1: Watches with mechanical movement.

In this 1st part of a two-part article you will find basic information about automatic and other ...

When will the clock change to summer or winter time?

Twice a year it's that time again - the clocks are changed. But when is the time change and how d...

Definition of different watches: Automatic watch, quartz watch & Co.

The question of whether automatic or quartz watch splits the spirits. BOTTA explains the differen...

February 18: Battery Day

On February 18, 1745, the Italian physicist Alessandro Volta was born. He is considered the inven...

What is sapphire glass and what does a high-quality anti-reflective coating do?

The advantages of sapphire glass in BOTTA watches and which watch crystals are there at all?

Good Design Award for TRES 24 from BOTTA

The TRES 24 by BOTTA convinces with an unconventional display principle paired with outstanding d...

Living between two time zones with GMT watches

In the past, a globally standardized time measurement as we know it today was not a matter of cou...

TRES 24 Automatic - as individual as time itself

The 24 hour watch TRES 24 Automatic is the right watch at any time. The pleasantly decelerated mo...

The new TRES 24 Quartz 40 mm – 24 hours, 60 minutes and C seconds

We at BOTTA like to give time extraordinary, but always logical shapes. This is also true of the ...

How to use your 24 hour one-hand wristwatch as a compass

Using an analog wristwatch as a compass is one of the basic survival techniques. With a 24 hour o...

UNO 24 plus titan

The UNO 24-Plus models with a diameter of 45 mm now have a completely redesigned, unique titanium...