in my first time vs on my first time

Some examples from the web:

• in my first time
• I just wanted to take it all in my first time out.
• I just wanted to take it all in my first time out.
• One last point in my first speaking time - because luckily I have another speaking time at the end - the USA.
• I was suddenly wide-awake in my life for the first time in years.
• You were stuck in my pelvis the first time you heard it.
• He stuck it in my face the first time I tried to introduce myself.
• When I held the prefelt in my hands for the first time, I immediately felt inspired to make a series of samples.
• I still remember when they put you in my arms for the first time.
• It was the month of October 2003, when in my parish for the first time I received an invitation to attend an Apostolic Movement meeting.
• When I was 9, he put a hammer in my hand for the first time.
• When they put you in my arms for the first time I never saw anything so beautiful in my whole life.
• It is, in my experience, the first time that the rapporteur has not tampered with the financial perspectives.
• T.S. came to see me in my study for the first time since the accident.
• 31, 2015, in Sonoma, California Photograph by Kirsten Leah Bitzer The choice of James Estrin The most profound moment in my life was holding my first child in my arms for the first time.
• And now I have the chance to relax... and do some other things in my life for the first time...
• My adventure on horseback, thanks to "Ranch des 2 îlets" in Deshaies, my very first time (HERE all the photos of Basse-Terre).
• Holding it in my hands for the first time, I suddenly shed all of my jadedness and cynicism, and I just felt happy that it existed.
• I fell in love with her from the moment I held her in my arms for the first time.
• the plant has produced blossoms after 2 years in my cultivation for the first time
• You will never feel the thrill of the first whipping again, nor I the turmoil of holding a human skull in my hand for the first time.

Some examples from the web:

• On my own for the first time.
• I had that same look on my face the first time somebody handed me one of those.
• He asked me to open up some shows for him and took me on the road for my first time.
• I remember Dad pushing me outside in my wheelchair, wrapped in a plaster body cast, and feeling the sun on my face for the first time.
• I'm just excited to be on my own, living on my own for the first time in my life.
• Mr President, I am very pleased to be here today, to address this House for the first time on my first day as a Member of the European Parliament.
• I mean our first time was my first time.
• On your first time - Who said it was my first time. that you're afraid - Wait a minute.
• It's my first time out of New York, actually, first time seeing the country.
• Be gentle, it's my first time.
• My first time with carol was...
• I had this whole fantasy of my first time.
• Not worried, not my first time.
• It's my first time going off alone.
• No, this is my first time.
• Perhaps because it was my first time.
• It's my first time as a driver.
• It wasn't my first time...
• Just between us... not my first time.
• It's my first time having an assistant.