| May 5 | Armenian | Other calendars Armenian 19 Mareri 1475 Aztec Xocotlhuetzi 15, 12 Calli Babylonian 17 Nisanu, 2337 SE Balinese pawukon Menga, Pasah, Jaya, Paing, Tungleh, Anggara of Taulu, Kala… | 1.00 | infobox |
| May 5 | Armenian | 19 Mareri 1475 | 1.00 | infobox |
| May 5 | Aztec | Xocotlhuetzi 15, 12 Calli | 1.00 | infobox |
| May 5 | Babylonian | 17 Nisanu, 2337 SE | 1.00 | infobox |
| May 5 | Balinese pawukon | Menga, Pasah, Jaya, Paing, Tungleh, Anggara of Taulu, Kala, Dangu, Suka | 1.00 | infobox |
| May 5 | Bengali | 22 Boisakh, BS 1433 | 1.00 | infobox |
| May 5 | Chinese | Yin Earth Rabbit・Tail Mansion 19 Sānyuè, Bǐngwǔnián (Lixia, 16 days until Xiaoman) | 1.00 | infobox |
| May 5 | Common Era | 5 May 2026 CE | 1.00 | infobox |
| May 5 | Coptic | 27 Parmouti, AM 1742 | 1.00 | infobox |
| May 5 | Egyptian | 19 Thoth, 2775 NE | 1.00 | infobox |
| May 5 | Ethiopian | 27 Miyāzyā, 2018 Amätä Məhrät | 1.00 | infobox |
| May 5 | French Republican | Décade II, Sextidi de Floréal de l'Année 234 de la République | 1.00 | infobox |
| May 5 | Gregorian | 5 May, AD 2026 | 1.00 | infobox |
| May 5 | Hebrew | 18 Iyar, AM 5786 Omer 33 | 1.00 | infobox |
| May 5 | Hindu | 5127 KY・1,872,700・Rāudra Solar: 22 Vaiśākha, 1948 SE Lunisolar: Caturthī, Kṛishna pakṣa of Vaiśākha, 2083 VE | 1.00 | infobox |
| May 5 | Icelandic | Þriðjudagur, 13 Harpa 2026 | 1.00 | infobox |
| May 5 | Islamic | 18 Dhu al-Qi'dah, AH 1447 (using tabular method) | 1.00 | infobox |
| May 5 | ISO week date | 2026-W19-2 | 1.00 | infobox |
| May 5 | Japanese | 19 Yayoi, Reiwa 8 (Rikka, 16 days until Shōman) | 1.00 | infobox |
| May 5 | Julian | 22 April, AD 2026 (AM 7534) | 1.00 | infobox |
| May 5 | Julian day | 2461166 | 1.00 | infobox |
| May 5 | Maya | 13.0.13.10.3 16 Uo, 12 Akbal | 1.00 | infobox |
| May 5 | Roman | ante diem X Kalendas Maias, MMDCCLXXIX AUC | 1.00 | infobox |
| May 5 | Solar Hijri | 15 Ordibehesht, SH 1405 | 1.00 | infobox |
| May 5 | is a | 125th day of the year | 0.90 | text |
