DD and I were on time for school this morning, but only by the skin of our teeth and with some luck.
Here's why...
I spent the last week making sure DD had everything she needed for school and I thought we were ready. She had summer and autumn uniform hanging in her wardrobe so she could choose, depending on the weather. I ordered what we didn't have (e.g. plain socks and plain t-shirts for PE) and it was delivered last week.
Last night, I found out that they needed to go in on the first day in PE clothes. Thank goodness for Whatsapp class groups! I searched out her PE kit and one of her t-shirts from last year as I wasn't sure where I'd put the new ones.
I also put the clothes I wanted to wear, myself, in the wash and dried them.
I also remembered at 11pm that DD needs a water bottle! You would think after 8 years of sending DC to school, that would be ingrained, but no, it genuinely didn't occur to me till last night.
This morning, DD put her PE kit on, and I realised there was a stain on the t-shirt which hadn't been obvious in dim light last night. I rushed round the house looking for the new t-shirts, which thankfully I found in 5 minutes. However they had those creases on them that you get when new clothes have been sold folded. So, I tried to find the iron. Now, that totally stumped me. I hadn't been expecting to use it (most of DD's uniform is non-iron), it wasn't where it's meant to live and I haven't seen it since the DC were last at school in July. After 5 minutes of frantically looking for it, I gave up and decided DD could wear the tshirt slightly creased as she wasn't bothered and the creases will hopefully fall out as the day goes on.
I then remembered that DD needs a snack for school. Kicking myself as I was so sure I'd remembered everything last night, but until we were actually getting ready for school, I'd totally forgotten about break time snack. Luckily I had something suitable and I found both a little tupperware box to put it in and its lid, together. A morning miracle! 
I took my clothes out of the dryer to get dressed. Then something distracted me (I forget what now, probably one of the things mentioned above). When I returned to focussing on getting dressed, I had absolutely no idea where my clothes were, I'd put them somewhere. I rushed about the house looking for them and managed to find them in under 5 minutes, phew!
However - I couldn't find a bra. I'm not good at self care and through a combination of putting on weight and losing bras in the house, I'm down to only two. One is in the washing machine, the other I was wearing yesterday and I was going to wear it again only I couldn't work out where it was. I knew I'd taken it off before bed, as one of the underwires is poking out and so I would have taken it off as soon as I got home, but I couldn't for the life of me remember where. That one took the longest to find.
I also had to search out the new socks and a hairband.
I had meant to leave 15 minutes early and had left lots of contingency. I'd used all the contingency up, nearly, and we had 5 minutes to leave before we'd be late. DD asked if I could show her the message about needing PE kit just as we were about to leave. We did still have anough time for this, I took her to the computer to show her the email that had been mentioned in the whatsapp group. I have a history of forgetting mufti etc so I'm happy to reassure DD if she needs it so she's not anxious on the way to school. We did that, it only took a minute, then I realised I'd put my bag down when we went to look at the computer, again no idea recollection of doing this or any idea of where. Managed to find it relatively quickly though, phew!
So, we left, and got there on time, but only just.
And this is a pretty typical morning.
Had any of those things I had to search for taken longer to find, we would have been late.
You might say "make sure you are ready the night before" but I did, and I really thought we were.
And, if you don't live like this, you have no idea how frustrating it is to have no memory of what you've done with things. It's like I'm living with someone who's sneaking around, taking the things I need from the places they live in, and hiding them randomly around the house. Only, that person is me.