Shiksak Dinachya Hardik Shubechya
You can say "സുഖാലി അധ്യാപക ദിനാശംസകൾ" (sukhali adhyapaka dinashamsakal) in Malayalam to wish someone Happy Teachers' Day.
In Marathi, for happy journey = shubh yatre saathi
행복 한 교사 하루 = happy teachers day
Wadhdiwasachya Shubhechha!
In Marathi, republic day is called 'Gantantr divas'
You say it in English, just as you would do in the US or any other English speaking country.
To wish someone a Happy Parents' Day in Marathi, you can say "आनंददायक पालक दिन!" (Ānandadāyak pālak din!). You can also add a personal touch by saying "आपल्या सर्व पालकांना आनंददायक पालक दिनाच्या शुभेच्छा!" (Āpalyā sarva pālakānnā ānandadāyak pālak dinācyā śubhēcchā!), which means "Best wishes for a Happy Parents' Day to all your parents!"
In Tamil, you would say "இனிய ஆசிரியர் தின நல்வாழ்த்துக்கள்" (Iniya aciriyar dinna nalvazhthukkal) to wish someone a happy Teacher's Day.
lagnachya vadhdivsa nimitta hardik shubhecha
lagnachya vadhdivsa nimitta hardik shubhecha
Namaskar - this is how we say hi in Marathi
Mazya priy muli la vaadhdivsachya hardik shubhechcha.