I am sorry to learn of this situation.
You have a somewhat complicated situation here.
In Minn. Notice is effective on date received, not date sent, see: http://www.ag.state.mn.us/consumer/Handbooks/LT/LT3.asp
The landlord is entitled to shorten your tenancy (I will use a different, exaggerated, example to avoid confusion)
- Tenant gives 90 days notice on Jan. 1
- Landlord receives notice on Jan. 3 (Effective day)
- Landlord decides to reply with their own 30 day notice on Jan. 10
- Tenant receives landlord's notice on Jan. 15 (Effective day)
- Tenant must vacate on Feb. 14 (30 days from date of notice effective day)
In your case, the landlord has attempted to shorten your notice period from 40 days to 30 days, but has given improper notice (sent you 30 days, dated March 1, but received March 4 (effective day), which would give you until April 3).
You have 2 options:
- Ignore the situation and wait for the landlord to try to enforce their ineffective notice, usually by an unlawful detainer (eviction) action. I don't recommend this option as even if you prevail due to the ineffective notice, you will still have an unlawful detainer action on your record, it costs a lot of time and money to deal with this problem, and litigation always carries a risk that you can lose (a judge has to agree with you).
- Contact the landlord, notify them that the notice is improper, and that they must provide you with new (proper) 30 days notice if they wish to terminate the lease earlier. If you are fortunately, the receipt of a new (proper) 30 day notice will put you closer to your original goal of April 9.
Ensure that you keep your communications with your landlord in writing (email or USPS) to ensure that you have a written record. If you speak to him by phone, promptly send a "confirmation letter" confirming when you talked, what you talked about, and any follow up action that will be taken.