I think she was around 8 or 9 months when I left her with my in-laws as I had a hospital appointment.
11 months she started the childminder initially 1 day a week as that was the only slot she had for the first few months, then went to 2.
15 months with in-laws so DH could go out for a meal for my birthday.
Overnight not till recently, around 2.5.
Left her with her dad obviously when she was younger so I could sleep/ shower/ nip to the shop etc.
DD was a lockdown baby so that impacted things, and although once childcare bubbles came in and we 'bubbled' with DH's parents - they weren't happy to have her on their own till she was a bit older (they're still not overly keen actually).
Also - I just didn't particularly want to for ages, which isn't meant to sound all 'oh I could never', and goodness knows I'll take any excuse for a break now we're at peak toddler craziness, but I didn't particularly feel I was missing anything back then.
Obviously DH had her on his own from the early days - though usually still all in the same house because again - lockdown.