| February 12 | Armenian | Other calendars Armenian 27 Mehekani 1475 Aztec Etzalcualiztli 13, 8 Cipactli Babylonian 23 Tebetu, 2336 SE Balinese pawukon Menga, Kajeng, Sri, Keliwon, Urukung, Wraspati of Me… | 1.00 | infobox |
| February 12 | Armenian | 27 Mehekani 1475 | 1.00 | infobox |
| February 12 | Aztec | Etzalcualiztli 13, 8 Cipactli | 1.00 | infobox |
| February 12 | Babylonian | 23 Tebetu, 2336 SE | 1.00 | infobox |
| February 12 | Balinese pawukon | Menga, Kajeng, Sri, Keliwon, Urukung, Wraspati of Menail, Ludra, Gigis, Manusa | 1.00 | infobox |
| February 12 | Bengali | 29 Magh, BS 1432 | 1.00 | infobox |
| February 12 | Chinese | Yin Fire Snake・Dipper Mansion 55 Shíyīyuè, Yǐsìnián (Lichun, 6 days until Yushui) | 1.00 | infobox |
| February 12 | Common Era | 12 February 2026 CE | 1.00 | infobox |
| February 12 | Coptic | 5 Meshir, AM 1742 | 1.00 | infobox |
| February 12 | Egyptian | 2 Epiphi, 2774 NE | 1.00 | infobox |
| February 12 | Ethiopian | 5 Yakātit, 2018 Amätä Məhrät | 1.00 | infobox |
| February 12 | French Republican | Décade III, Quartidi de Pluviôse de l'Année 234 de la République | 1.00 | infobox |
| February 12 | Gregorian | 12 February, AD 2026 | 1.00 | infobox |
| February 12 | Hebrew | 25 Shevat, AM 5786 | 1.00 | infobox |
| February 12 | Hindu | 5126 KY・1,872,618・Siddhārthin Solar: 30 Māgha, 1947 SE Lunisolar: Daśamī, Kṛishna pakṣa of Māgha, 2082 VE | 1.00 | infobox |
| February 12 | Icelandic | Fimmtudagur, 21 Þorri 2025 | 1.00 | infobox |
| February 12 | Islamic | 24 Sha'aban, AH 1447 (using tabular method) | 1.00 | infobox |
| February 12 | ISO week date | 2026-W07-4 | 1.00 | infobox |
| February 12 | Japanese | 25 Shiwasu, Reiwa 8 (Risshun, 7 days until Usui) | 1.00 | infobox |
| February 12 | Julian | 30 January, AD 2026 (AM 7534) | 1.00 | infobox |
| February 12 | Julian day | 2461084 | 1.00 | infobox |
| February 12 | Maya | 13.0.13.6.1 19 Pax, 8 Imix | 1.00 | infobox |
| February 12 | Roman | ante diem III Kalendas Februarias, MMDCCLXXIX AUC | 1.00 | infobox |
| February 12 | Solar Hijri | 23 Bahman, SH 1404 | 1.00 | infobox |
| February 12 | is a | 43rd day of the year in the Gregorian calendar | 0.90 | text |
