Yesterday (time)

Yesterday
(at UTC+00)
Yesterday; (at UTC+00)
Thursday, 27 August 2026
Akan	Foyaw
Armenian	8 Hoṙi 1476
Aztec	Atemoztli 9, 9 Ōlīn
Babylonian	13 Abu, 2337 SE
Balinese pawukon	Luang, Pepet, Pasah, Jaya, Umanis, Tungleh, Wraspati of Matal, Kala, Urungan, Duka
Bengali	12 Bhadro, BS 1433
Chinese	Yin Water Rooster・Dipper Mansion; 15 Qīyuè, Bǐngwǔnián; (Chushu, 11 days until Bailu)
Common Era	27 August 2026 CE
Coptic	21 Mesori, AM 1742
Egyptian	13 Tybi, 2775 NE
Ethiopian	21 Naḥasē, 2018 Amätä Məhrät
French Republican	Décade I, Décadi de Fructidor de l'Année 234 de la République
Gregorian	27 August, AD 2026
Hebrew	14 Elul, AM 5786
Hindu	Dhaniṣṭhā・Śobhana; Solar: 11 Bhādrapada, 1948 SE; Lunisolar: Caturdaśī, Śukla pakṣa of Śrāvaṇa, 2083 VE; Rāudra・5127 KY・1,872,814
Icelandic	Fimmtudagur, 3 Tvímánuður 2026
Islamic	13 Rabi' al-awwal, AH 1448 ; (using tabular method)
ISO week date	2026-W35-4
Japanese	15 Fumizuki, Reiwa 8; (Shosho, 11 days until Hakuro)
Julian	14 August, AD 2026 (AM 7534)
Julian day	2461280
Maya	13.0.13.15.17; 10 Mol, 9 Caban
Roman	ante diem XIX Kalendas Septembres, MMDCCLXXIX AUC
Solar Hijri	5 Shahrivar, SH 1405
Tibetan	14 lhag gro bzhin, me pho rta; 2153 or 1772 or 1000
	[]

Yesterday is a temporal construct of the relative past; literally of the day before the current day (today), or figuratively of earlier periods or times, often but not always within living memory.

Learning and language

The concepts of "yesterday", "today" and "tomorrow" are among the first relative time concepts acquired by infants.^[1] In language a distinctive noun or adverb for "yesterday" is present in most but not all languages, though languages with ambiguity in vocabulary also have other ways to distinguish the immediate past and immediate future.^[2] "Yesterday" is also a relative term and concept in grammar and syntax.^[3]

Yesterday is an abstract concept in the sense that events that occurred in the past do not exist in the present reality, though their consequences persist.

Some languages have a hesternal tense: a dedicated grammatical form for events of the previous day.

References

↑ Cath Arnold Child Development and Learning 2-5 Years: Georgia's Story 0761972994 1999 "She is referring, not only to her correct use of language, but to the concept of 'yesterday', which she uses correctly in this instance."
↑ Mary R. Key The Relationship of Verbal and Nonverbal Communication 3110813092 1980 p.20 "The consideration of time calls for communicating the concept of 'yesterday' and 'tomorrow'. In some languages the same term is used for both of these English words, though assuredly the people also have a way of dealing with past and future actions. For example, in Chama (Tacanan) mekawaxe means both 'yesterday' and 'tomorrow'. It is of interest that this same language group deals with space in a similar way. Thus, in Chama sam' means both 'left' and 'right';"
↑ The Function of tense in texts Jadranka Gvozdanović, Theodorus Albertus Johannes Maria Janssen, Östen Dahl - 1991 - Volumes 144 to 146 - Page 100 "Yesterday is relative to the day 'where we are', a minute ago to the minute, more or less, 500 years ago to 'our present' in a thematically suitable sense, perhaps 'this century', or 'modern times'. "

[1] Cath Arnold Child Development and Learning 2-5 Years: Georgia's Story 0761972994 1999 "She is referring, not only to her correct use of language, but to the concept of 'yesterday', which she uses correctly in this instance."

[2] Mary R. Key The Relationship of Verbal and Nonverbal Communication 3110813092 1980 p.20 "The consideration of time calls for communicating the concept of 'yesterday' and 'tomorrow'. In some languages the same term is used for both of these English words, though assuredly the people also have a way of dealing with past and future actions. For example, in Chama (Tacanan) mekawaxe means both 'yesterday' and 'tomorrow'. It is of interest that this same language group deals with space in a similar way. Thus, in Chama sam' means both 'left' and 'right';"

[3] The Function of tense in texts Jadranka Gvozdanović, Theodorus Albertus Johannes Maria Janssen, Östen Dahl - 1991 - Volumes 144 to 146 - Page 100 "Yesterday is relative to the day 'where we are', a minute ago to the minute, more or less, 500 years ago to 'our present' in a thematically suitable sense, perhaps 'this century', or 'modern times'. "

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[2]

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