2025 Calendar | Tidal Waves | A4

Ocean flows, sunsets and nautical vibes, this 2025 A4 wall calendar is a great fit for minimalist and ocean lovers.

This line art-inspired ocean calendar features minimalist line drawings of ocean flows and sunsets.

Each monthly calendar page has a dated grid from Monday to Sunday, with space to jot down your appointments, events or birthdays. It also includes week numbers, moon phases, UK & US holidays, and notable dates.

The compact A4 size means it seamlessly fits above your desk or neatly in your kitchen or dorm room.

Choose between a Monday or Sunday start to the week.

Optional: add a pack of Corner Stickers to level up your planning in 2025.

As always, designed and printed in the UK on 100% recycled paper.

See the full tidal waves collection here!

Product Details:

• A4: 21 × 29.7 cm // 8.3 × 11.7 inches
• Box Size: 2.9 x 3.4 cm // 1.14 x 1.34 inches
• 160gsm matte paper (easy to write on and doesn’t bleed), with 300gsm covers
• 12 Months: January - December 2025
• Week Starts Monday
• Ring-bound with a hand to hang on a hook
• 100% recycled and recyclable paper
• Posted in Plastic-free packaging
• Includes week numbers, UK & US holidays, and moon phases (Northern Hemisphere)

UNITED KINGDOM

• Royal Mail Tracked 48® - Free on all UK orders over £10.00
• Royal Mail Tracked 48® - £1.99 on all UK orders under £10.00
• Royal Mail Tracked 24® - £3.50 express UK delivery
• DPD Next Day Delivery (Monday to Friday)* - £6.75 next day UK delivery 
• DPD Next Day Delivery (Saturday)* - £8.95 next day Saturday UK delivery

* Next Day Available If Ordered By 2pm

EUROPE

• Royal Mail International Standard - £5.00 Untracked
• Royal Mail International Standard - £11.00 TRACKED
  
  Royal Mail aims to deliver in 3-5 working days. Although this may be longer. 
  (please note, some countries will charge extra fees when importing. For example, orders to NL over EU22 - will have a customs clearance fee)
  

REST OF THE WORLD

• Royal Mail International Standard - £8.00 Untracked
• Royal Mail International Standard - £15.00 TRACKED
  
  Royal Mail aims to deliver in 6-10 working days. Although this may be longer. 
  (please note, some countries will charge extra fees when importing. For example, orders to NL over EU22 - will have a customs clearance fee)
  

DELIVERIES
For orders placed before 2pm on a working day, we aim to get your order out on the same day. Orders after 2pm will be shipped on the next working day.
We don’t ship on UK bank holidays as our postal service doesn’t run.
See all bank holidays here.

Your parcel will arrive plastic-free with minimal packaging and inserts. We run a plastic-free warehouse.

Here’s a few more ways we work towards sustainability goals:

• All products are made in the U.K.
• Printed on 100% Recycled Paper, always
• All Deliveries are Carbon offset through Shopify Planet

Once Upon a Tuesday is UK’s first Certified B Corporation Stationery Brand - using business as a force for good.