Dear Colleague,
You have to calculate from your date of joining (excluding the apprenticeship period, if any). It is not 4.10 years. If your working period comes to 4 years + 240 days, then you may claim your gratuity as per the judgment of the Honorable High Court of Madras. Hence, do your internal calculation and then claim.
For your understanding, generally, an employee shall be said to be in continuous service for a period if they have, for that period, been in uninterrupted service, including service which may be interrupted on account of sickness, accident, leave, absence from duty without leave (not being absence in respect of which an order treating the absence as a break in service has been passed in accordance with the standing order, rules, or regulations governing the employees of the establishment), layoff, strike, or a lock-out or cessation of work not due to any fault of the employee, whether such uninterrupted or interrupted service was rendered before or after the commencement of the Payment of Gratuity Act.