Hi Hasni - Cutting sentences out of context won't help you. You can apply anytime if you are/will be eligible at the time of receiving your OHIP card. If that's the case, go ahead with your OHIP application.
The pages Wilson provided the link to are a simplified set of rules to help you understand the system. If you want to determine your eligibility with certainty, go to the official pages of the Ministry to peruse the guidelines and laws.
http://www.health.gov.on.ca/en/public/publications/ohip/ohip_eligibility.aspx
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OHIP Eligibility
Am I eligible for Ontario health insurance coverage?
You may be eligible for the Ontario Health Insurance Plan (OHIP) if you are included under one of the following categories:
you are a Canadian citizen, permanent resident or landed immigrant, or are registered as an Indian under the Indian Act;
you have submitted an application for permanent residence in Canada, and Citizenship and Immigration Canada has confirmed that you meet the eligibility requirements to apply for permanent residence in Canada ;
you have applied for a grant of citizenship under section 5.1 of the Citizenship Act (Canada), and Citizenship and Immigration Canada has confirmed that you meet the eligibility requirements to apply for citizenship (i.e., children adopted internationally by Canadian citizens);
you are a "protected person" - i.e. a Convention Refugee or a person in need of protection;
you are a foreign worker who holds a valid work permit or other document issued by Citizenship and Immigration Canada (CIC) permitting you to work in Canada, and you also have a formal agreement in place to work full-time for an employer situated in Ontario which sets out the employer's name, your occupation, and confirmation that you will be working for no less than six consecutive months;
you are a member of the clergy who is legally entitled to stay in Canada and will be providing services to a religious congregation in Ontario for at least six months;
you hold a Temporary Resident Permit with case type 80 (for adoption only), 86, 87, 88, 89, 90, 91, 92, 93, 94 or 95;
you are the spouse, or dependent child (under 22 years old or 22 years and over if dependent due to a mental or physical disability) of an OHIP-eligible member of the clergy or OHIP-eligible foreign worker;
you hold a valid work permit under the federal Live-in Caregiver Program;
you hold a valid work permit under the federal Seasonal Agricultural Worker Program;
And
you make your primary place of residence in Ontario; and generally,
you are in Ontario for at least 153 days of the first 183 days immediately following the date you establish residence in Ontario (you cannot be absent for more than 30 days during the first 6 months of residence); and
you are in Ontario for at least 153 days in any 12-month period.
Tourists, transients or visitors are not eligible for OHIP coverage.
Your eligibility for Ontario health insurance coverage is based solely on:
you having one of the above OHIP-eligible citizenship or immigration statuses, and
you making your primary place of residence in Ontario, and
meeting the physical presence requirements.
For more details about OHIP eligibility refer to Regulation 552 of Ontario's Health Insurance Act at www.e-laws.gov.on.ca.
But I am sure eligibility criteria of three months prevails largely. Please correct me if I am wrong.
