Calculateur de Dates : Ajouter, Soustraire des Jours et Intervalle
Calculateur de Dates : Ajouter, Soustraire des Jours et Intervalle
Cet outil fonctionne à 100% côté client dans votre navigateur. Vos données biométriques, de santé ou de temps ne sont jamais enregistrées sur un serveur distant.
Formule & Méthode de Calcul
Date cible = Date de référence ± [Années, Mois, Jours]
Because months have variable lengths (28, 29, 30, 31), adding '1 Month' to January 31st mathematically defaults to February 28th (or 29th), requiring complex boundary-handling algorithms within the JS engine.
Bonnes Pratiques & Conseils
- Understand Inclusive vs Exclusive Boundaries: If a hotel is booked for '3 nights' starting Friday, the checkout is Monday. The calculation must exclude the final day from the count to represent physical overnight stays accurately.
- Use for Software Sprints: Agile engineering teams rely on strict 14 day intervals (Sprints). Using a date calculator ensures all Jira ticket deadlines and retrospective meetings align perfectly with the calendar matrix.
- Watch for Timezone Bleed: When manipulating raw date objects in JavaScript, the browser will attempt to apply the user's local timezone. Always force calculations into absolute UTC to prevent dates from shifting by ±1 day.