Which date counts your age for a government job?

The phrase to look for is crucial date. Notices also use *date of birth as on*, *age reckoning date* and *cut-off date*. All four mean the same thing: the single day on which your age is measured for that particular recruitment.

The reckoning date used by each commission

If two of these lines are wrong for the cycle you are reading, the notice wins. The figures above are taken from notifications for the 2026 cycle, and every cycle changes the calendar dates even when the age band stays the same. A 1 August reckoning date in 2027 produces different boundary dates from the same limit in 2026.

How the difference actually costs you a job

Take a candidate born on 25 July 1999. This is a real shape of problem rather than an invented one, because the whole of July sits within a few weeks of two different reckoning dates.

• On 1 August 2026, which is an SSC and UPSC reckoning date, that candidate is 26 years old, because the birthday has not come round yet in that year.
• On 1 January 2026, the railway reckoning date, the same candidate is 26 years old as well, having already turned 26 in July 2025.
• On 1 April 2026, the SBI date, the candidate is 26.

Now move the birthday to 30 July 2001 and set the limit at 25 years. On 1 August 2026 the candidate is 24, and a 25-year-old limit with no relaxation is comfortably cleared. Measure that same person on 1 January 2026 and they were also 24, so nothing changes here either. The arithmetic only diverges when the birthday falls between the two reckoning dates. A candidate born on 10 August 1999 is 26 on 1 January 2026 but turns 27 on 10 August 2026, which is the day before the SSC reckoning date. At a 27-year limit that person is 26 for the railway and 27 for the SSC, and a limit phrased as *18 to 27* would exclude them on one reckoning date and not the other.

Two ways a notice states the limit

1. An age range

SSC CHSL states it as *18 to 27 years as on 1 August 2026*. You measure your age on 1 August 2026 and compare. This is the easier form because the comparison is the age you already computed.

2. A date-of-birth window

UPSC states both in the same breath: *must not have attained the age of 32 years on 1 August 2026, that is, born not earlier than 2 August 1994 and not later than 1 August 2005*. The two figures are identical in meaning, and the notice gives you the dates so that nobody has to work backwards from an age.

Railway went further in the NTPC notice and published a different window for each reservation group, which is where most published guides go wrong. The CEN notice sets the earliest admissible date at 2 January 1996 for General and EWS, 2 January 1993 for OBC non-creamy layer, and 2 January 1991 for SC and ST, with 1 January 2008 as the closing date for everyone. Applying the General window to an OBC candidate who was born in 1994 produces a wrong answer in the strict direction: it refuses someone the notice actually allows.

Age relaxation is added to the same reckoning date

Relaxation does not use a different date, it moves the boundary. An OBC candidate who needs three extra years is judged against the same 1 August 2026 reckoning date with the limit raised by three. For UPSC in the 2026 cycle that turns the single General window into four: 2 August 1994 for General and EWS, 2 August 1991 for OBC, 2 August 1989 for SC and ST, and 2 August 1984 for a candidate with a benchmark disability. A person with a benchmark disability who is also OBC gets the two together, 3 plus 10, which puts the boundary at 2 August 1981.

A five-minute check you can do yourself

1. Find the crucial date in the notice. Write it down as a full date, not as a month.
2. Find whether the limit is given as an age range or as two dates of birth. Either is fine; note which one you have.
3. If the notice prints a window per reservation group, read the row for your group and not the general one.
4. Measure your age on that date, then add any relaxation your category allows and add it to the upper limit, never to the lower one.
5. If you land within a few weeks of the upper limit, read the notice once more for a final-year or provisional-eligibility clause, because several exams allow a candidate who is short of the final degree to apply.

The Eligibility Checker applies this arithmetic for the exams it covers, using the reckoning date printed in each one, and tells you which date it used for each verdict so you can check it against the notice. Where a notice publishes a window per group, it uses the window for your group.

Working out next year's window before the notice arrives

The windows are derivable, which is worth knowing because recruitment notices arrive months after applications open and sometimes the portal has a typo that candidates notice before the office does. The two ends of a window are not symmetrical, and getting this wrong is the single most common arithmetic error in candidate forums.

• Earliest admissible date of birth = reckoning date minus the maximum age, plus one day. You must not have attained the maximum age on the reckoning date, so someone who turns the maximum on the reckoning date itself is too old by that one day.
• Latest admissible date of birth = reckoning date minus the minimum age. You must have attained the minimum age on the reckoning date, so someone turning the minimum on that day is exactly old enough.

If the two ends come out one day apart from what the notice prints, the notice governs and it is worth writing to the conducting body before you rely on your own arithmetic. If they match, you have a quick way to work out the next cycle's window: shift the reckoning date forward a year, move both ends forward a year, and shift the earliest end forward a day for the leap year in between.

The lower limit is a separate clause

Age relaxation never reduces the lower limit, and that is not the only thing a notice says about it. Several exams add a provision allowing a candidate who has not yet attained the minimum age by the reckoning date to apply, provided the minimum qualification is acquired by a later date fixed in the notice. UPSC states this for the Civil Services examination: a final-year degree candidate may write the prelims, but the degree must be in hand by the date fixed for the Main Examination application, which is a different and later date than the prelims.

This is the provision that catches out candidates who read only the age table and conclude they are too young. It is also the provision that catches out candidates who read it and assume the lower age limit does not apply to them at the stage where it does. The qualifying examination still has to be passed, by the date, and the notice does not extend the upper limit by the same period. Read the two sentences together.