October 2021, day by day.

An assortment of postage stamps with images of Mahatma Gandhi (© PictureLake/E+/Getty Images)

2021-10-01

The Ivishak River in the North Slope of Alaska (© Don Paulson/Danita Delimont)

2021-10-02

The Roman amphitheater of Itálica near Santiponce, Spain (© Amazing Aerial Agency/Offset by Shutterstock)

2021-10-02

Andromeda galaxy (© NASA/JPL-Caltech)

2021-10-03

Aerial view of kindergarteners drawing on a canvas in Nantong, in the Jiangsu province of China (© Xu Hui/VCG via Getty Images)

2021-10-04

A canopy of trees in a forest in Prince Edward Island (© OliverChilds/Getty Images)

2021-10-05

Dallas Divide in southwest Colorado (© Ronda Kimbrow/Shutterstock)

2021-10-05

Fall foliage in Mount Assiniboine Provincial Park, British Columbia (© Mitch Pittman/TANDEM Stills + Motion)

2021-10-06

Huay Mae Khamin waterfall in Khuean Srinagarindra National Park, Thailand (© Casper1774Studio/Getty Images)

2021-10-06

Common octopus in sea grass off the coast of France in the Gulf of Lion in the Mediterranean Sea (© BIOSPHOTO/Alamy)

2021-10-07

Sandhill cranes and mallard ducks, Bosque del Apache National Wildlife Refuge, New Mexico (© Cathy & Gordon Illg/Jaynes Gallery/DanitaDelimont.com)

2021-10-08

Rainbow abalone shell, New Zealand (© Lynda Harper/Minden Pictures)

2021-10-09

Red pandas in cloud forest habitat of Singalila in West Bengal, India (© Ben Cranke/Minden Pictures)

2021-10-10

The Clan House at Totem Bight State Historical Park near Ketchikan, Alaska (© Ron Niebrugge/Alamy)

2021-10-11

Wapizagonke Lake, La Mauricie National Park, Quebec, Canada (© Instants/Getty Images)

2021-10-11

Least Chipmunk (Tamias minimus) adult, feeding on berries in Autumn, Jasper National Park, Alta. (© Ignacio Yufera/Minden Pictures)

2021-10-11

Saint-Malo in Brittany, France (© Mathieu Rivrin/Moment/Getty Images)

2021-10-11

An ichthyosaur fossil of the Jurassic period, Dinosaurland Fossil Museum, Lyme Regis, Dorset, England (© Christopher Jones/Alamy)

2021-10-12

Saguaro 'family' and Milky Way, Saguaro National Park, Arizona (© Christian Foto Az/Shutterstock)

2021-10-13

An artisan applies final touches to an effigy of Ravana in Jammu, India (© Mukesh Gupta/Reuters)

2021-10-14

Farra di Soligo in the Prosecco Hills of Veneto, Italy (© Olimpio Fantuz/Sime/eStock Photo)

2021-10-15

Aerial view of the Temple of Hatshepsut near Luxor, Egypt (© Ratnakorn Piyasirisorost/Moment/Getty Images)

2021-10-15

Redwood Memorial Grove in Whakarewarewa Forest, North Island, New Zealand (© Michael Breitung/Huber/eStock Photo)

2021-10-16

Capel Curig in Snowdonia National Park, Wales, United Kingdom (© Sebastian Wasek/Sime/eStock Photo)

2021-10-17

The Fanal Forest on Madeira Island, Portugal (© Val Thoermer/Alamy)

2021-10-18

Brown-throated three-toed sloth in Manuel Antonio National Park, Costa Rica (© Lukas Kovarik/Shutterstock)

2021-10-19

Bald cypress and Spanish moss in the Atchafalaya Basin, Louisiana (© Chris Moore/Exploring Light Photography/Tandem Stills + Motion)

2021-10-20

Comet NEOWISE streaks across the sky over Sunwapta Lake in Jasper National Park, Alberta, Canada (© Stocktrek Images, Inc./Alamy)

2021-10-21

Eurasian scops owl in Bohemian Switzerland National Park, Czech Republic (© Milan Zygmunt/Alamy)

2021-10-22

Bavljenac Island, Croatia (© Julien Duval/Amazing Aerial Agency)

2021-10-23

Virupaksha Temple framed by two huge rocks in Hampi, Karnataka (© Travel Wild/iStock/Getty Images Plus)

2021-10-24

Dyavolski Most (Devil's Bridge) over the Arda River in Bulgaria (© Petar Mladenov/Alamy)

2021-10-25

Red fox in the Black Forest of Germany (© Klaus Echle/Minden Pictures)

2021-10-25

A pumpkin patch in Newton, Massachusetts (© Frank Debonis/EyeEm/Alamy)

2021-10-26

Necropolis near Dargavs, North Ossetia, Russia (© Yakov Oskanov/Shutterstock)

2021-10-27

Ravens, Alaska, USA (© Brian Browitt Photo/Adobe Stock)

2021-10-28

Cinnamon fern meadow near St. Mary's River, Nova Scotia (© Irwin Barrett/Design Pics/Alamy)

2021-10-28

Misty pine forest in the Central Highlands of Vietnam (© Thanh Thuy/Moment/Getty Images)

2021-10-29

Grotesques at York Minster, North Yorkshire, England (© John Potter/Alamy)

2021-10-30