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A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day). In 1960, the second was redefined in terms of the orbital motion of the Earth in year 1900, and was designated the SI base unit of time. The unit of measurement "day", was redefined as 86 400 SI seconds and symbolized d. In 1967, the second and so the day were redefined by atomic electron transition. A civil day is usually 86 400 seconds, plus or minus a possible leap second in Coordinated Universal Time (UTC), and occasionally plus or minus an hour in those locations that change from or to daylight saving time. In common usage, it is either an interval equal to 24 hours or daytime, the consecutive period of time during which the Sun is above the horizon. The word day may also refer to a day of the week or to a calendar date, as in answer to the question, "On which day?" The life patterns (circadian rhythms) of humans and many other species are related to Earth's solar day and the day-night cycle.
12345678 - Marysia and Edek are reading in Helusz
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12345678

Added 2 weeks ago by Maria

4

life continues - monika light with shadow
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life continues

Added 2 weeks ago by monika

9

Aga, Cuba, Cuba - Our family: Aga, Kuba and Kuba.Klan Niebieskich.Blue.
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Aga, Cuba, Cuba

Added 3 weeks ago by ela

13

szczepTata - vintageing hoptyś with dad
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szczepTata

Added month ago by jan

5

Memories from GŁOGOWA - We were with children on ice cream in the old town
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Memories from GŁOGOWA

Added 2 months ago by wiesia

6

babies - End of school year
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babies

Added 3 months ago by kas

23

Mójsynuś - My sons who are by the sea and have fun
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Mójsynuś

Added 3 months ago by Dorota

87 2

Majoox10 - The beginning of the year of my crumb
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Majoox10

Added 3 months ago by majaxd

8

Genelia Ritesh - Genelia and Ritesh at the photo session.
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Genelia Ritesh

Added 4 months ago by Mini

3

House-monument - cottage in the Polish countryside
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House-monument

Added 4 months ago by krystyna

50

A card for my mother - Mother's Day card. Special day.
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A card for my mother

Added year ago by SYlwia

84 2

Child and balloons - All our children are! Special day.
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Child and balloons

Added year ago by kot

28

Children's Day - Much joy for all Children! Special day. The best puzzle zone for kids.
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Children's Day

Added year ago by Basia

29 1

Christian - My child eats an ice cream on a normal day with his mom
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Christian

Added year ago by Rita

24

best brother - A little boy lying in a small boat
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best brother

Added year ago by julia

26

sisters - kupowiki is kupowiki
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sisters

Added year ago by ewa

25

my Valentine - we celebrate Valentine's Day >>> Special day.
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my Valentine

Added year ago by Basiunia

57 1

super heart 12 - it's cool and nice. Special day.
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super heart 12

Added year ago by Gosia

125

Spring - Yellow daffodils in the spring
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Spring

Added year ago by gabriel

78

Valentine's Day - colorful jigsaw puzzle. Special day.
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Valentine's Day

Added year ago by andi

71

Doris Day - Doris DayDoris DayDoris Day
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Doris Day

Added year ago by Doris Day

14

zuziawnusia - wnusiazuziawnusiaukladanka
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zuziawnusia

Added year ago by Frugo

65 1

Jigsaw puzzle - complicated puzzle
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Jigsaw puzzle

Added year ago by andi

13

Amelka12 - My daughter Amelka on vacation with her grandmother
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Amelka12

Added year ago by Amelka

15

Friends <3 - My picture with my best friend.
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Friends <3

Added year ago by Julia

19

Max and Ruby - Maks is a bunny and lives in a rabbit town. He loves to mess and mischief. His older sister Ruby is
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Max and Ruby

Added year ago by max

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