An article about a festival may mention a numbered Gregorian date, a lunar tithi and a traditional month. Another calendar may include a solar month as well. These labels can appear together because they describe time using different systems. They are not necessarily competing answers to a single question.
For someone following Shiva observances, the useful skill is to identify which kind of date a source is giving. That makes it easier to understand an annual reminder without assuming the same Gregorian number will apply indefinitely.
A civil date helps organise everyday plans
The Gregorian calendar is widely used for travel, appointments and ordinary datekeeping. A date such as 15 March identifies a day within that calendar; it does not, by itself, identify a lunar tithi. Always retain the year when planning around a festival entry.
When a calendar publishes the civil date for a religious observance, it is helping readers locate that observance in everyday schedules. A calendar guide should preserve the traditional basis where relevant instead of replacing it with a permanent civil anniversary.
A lunar reference describes a different cycle
Traditional lunar entries use terms such as month, paksha and tithi. They track relationships in the lunar cycle rather than matching a fixed number of ordinary calendar days each month. A complete reference therefore requires more than the printed Gregorian day number.
If an observance follows lunar reckoning, its position on the Gregorian calendar can change from year to year. Copying last year's civil date without checking a current source is not verification, even when the reminder was accurate when originally published.
A solar reference is not another name for a tithi
Solar calendar reckoning relates to the Sun's apparent annual movement. Different traditional calendar systems can combine or emphasise solar and lunar information in different ways. A solar month heading and a lunar month heading should therefore not be silently treated as interchangeable.
The term lunisolar describes a system that keeps lunar reckoning connected to the solar year. It helps explain why a traditional calendar may discuss lunar months and seasonal alignment together. It does not imply that every printed date is calculated using one identical rule.
Read a festival article with the right question
First ask what determines the observance being discussed. Is the source explaining a lunar occasion, a solar transition or a fixed civil commemoration? Then check how it converts that basis into the year's actual local listing.
Do not infer the answer from the style of the calendar. A beautifully designed grid may display several systems at once, while a plain table may contain the more important explanatory notes. The labels and calculation basis matter more than colour or typography.
Save enough information for next year
A useful festival note includes the observance name, the year, the local civil date, the source and any location specified by that source. If you also record a traditional date, retain its month, paksha and tithi rather than reducing it to one word.
Treat next year's reminder as a prompt to check the new calendar. For an explanation of a separate adjustment within lunar month reckoning, read Adhika Masa. For interpreting the times in an entry, read Reading a Panchang Entry.
Reference
India Meteorological Department's presentation on Indian calendars distinguishes civil, solar and lunisolar reckoning. This guide explains calendar vocabulary; it does not supply unverified festival dates.
