Chaitra 1 of the national calendar based on the Saka Era corresponds to which one of the following dates of the Gregorian calendar in a normal year of 365 days?

States the Indian National Calendar is solar, and that the year begins on 22 March in a regular year (and on 21 March in leap years when a day is added to Chaitra).

A student can combine this start-date rule with the number of days in subsequent months to map Chaitra 1 forward in the Gregorian calendar and check whether it falls in mid-May.

Gives a historical anchoring: the unified calendar was adopted such that 1 Chaitra corresponded to 21 March 1956 (1 Chaitra 1878 Saka), linking Chaitra 1 to late March in the Gregorian year.

Use this canonical mapping (1 Chaitra ≈ 21–22 March) as a baseline and project forward by adding month lengths to test if any mapping to 15–16 May is plausible.

Maps traditional month names to Gregorian-month ranges: Chaitra–Vaisakha correspond to March–April, implying Chaitra lies in March–April rather than mid-May.

Compare these month-range correspondences with the claim about mid-May to see if Chaitra 1 could logically be in May.

Explains Gregorian calendar month lengths and the leap-year rule (≈ one extra day every four years), which affects how dates shift between calendars.

Combine the leap-year adjustment rule with the National Calendar's stated start on 21/22 March to determine whether Chaitra 1 could land on 15/16 May in any normal (non-leap) year.

Notes that some Indian solar-based festivals occur on almost the same Gregorian dates (e.g., Vaisakhi in mid-April), illustrating that solar months remain anchored to spring dates rather than drifting into May.

Use the fixed timing of such solar festivals (mid-April) as corroborative evidence that months like Chaitra/Vaisakha are tied to March–April timings, not mid-May.

States the Indian National Calendar is solar and that the year begins on 22 March in a regular year, with leap years shifting the start to 21 March.

A student can compare the explicit start date (22 March) to the queried dates (30/31 March) on a Gregorian calendar to judge plausibility.

Says the Unified National Calendar (1 Chaitra) was adopted and tied to a specific Gregorian date (adopted from 21 March 1956 CE = 1 Chaitra 1878 Saka).

Use the adoption rule linking 1 Chaitra to a March date to check whether 30/31 March are likely matches in ordinary years.

Explains solar calendars are adjusted to add to 365 days and that leap years add a day roughly every four years, implying national calendar months are set to align with Gregorian leap rules.

Combine this with the national calendar's stated epoch shift in leap years to determine which Gregorian date corresponds to 1 Chaitra in non-leap years.

Summarises Gregorian leap-year rules (365 days normally; leap years every 4 years with century exceptions), relevant because the national calendar is matched to the Gregorian leap scheme.

A student can apply these leap-year rules to decide when the national calendar would shift and thus whether 1 Chaitra could fall on 30/31 March in a normal year.

Notes that some Indian solar calendar festivals fall on almost the same Gregorian dates each year because of alignment with the tropical year, indicating the national calendar is designed for close alignment with Gregorian dates.

Use the idea of designed alignment to infer that 1 Chaitra is anchored to a specific late-March Gregorian date rather than as late as 30–31 March in ordinary years.

Explains the Indian National Calendar is a solar calendar and states in a regular (non-leap) year the year begins on 22 March, with leap years beginning on 21 March.

A student can infer that Chaitra 1 (the first day of the national calendar) falls on 22 March in a normal 365‑day year, so compare this to the claimed 20/21 April.

Gives the historical adoption date: the unified national calendar was adopted so that 1 Chaitra 1878 Saka = 21 March 1956 CE.

Use this concrete mapping (1 Chaitra = 21 March in that year) plus rule differences for leap vs non‑leap years to test the general claim about April dates.

Shows Chaitra corresponds to the March–April season/month block in relation to the Gregorian calendar.

A student can use this seasonal mapping to expect Chaitra dates to fall in March–April, then check exact day mappings against the statement.

Explains solar calendars total 365 days with an extra ~1/4 day accumulated and corrected by leap years.

Combine this leap‑year rule with the Indian calendar's leap‑day placement (snippet 1) to determine how Chaitra 1 shifts between 21 March and 22 March, and assess any claim of an April correspondence.

Notes some Indian solar calendars yield festival dates that stay almost the same in the Gregorian (tropical) year due to alignment with the tropical year.

A student can take this principle to justify checking whether the national calendar was aligned to the tropical year (hence near‑fixed March dates) rather than to a date in late April.