The Sri Venkateswara Temple’s calendar does not rely on the standard January‑December year. Instead, it is anchored to the Hindu lunisolar system, dividing the year into twelve tithis and six pakshas. Each tithi aligns with a specific phase of the moon, which determines the timing of major festivals such as Brahmotsavam, Kalyanotsavam, and the weekly Sahasranam. Temple authorities publish the official schedule each year, usually a few months in advance, to guide pilgrims.
Because lunar months shift relative to the Gregorian calendar, festival dates appear to move each year. For example, the sacred Tirupati Brahmotsavam may fall in September one year and October the next. Additionally, the temple adjusts certain rituals to accommodate local holidays or extraordinary circumstances, such as pandemic‑related restrictions. These fluid elements explain why a single static calendar cannot capture the full picture, and why pilgrims must consult the temple’s current bulletin.