I think I'll start a thread where I post every day how late my computer was off the day before, how late I went to bed and how late I got up.
Reason is: my sleeping schedule is kind of screwed up at the moment. The theory is 23:00-00:00-09:00, but I keep going to bed too late.
My conventional methods have failed, so I guess I'll try accountability through social media.

Let's start with last night.
00:15
00:45
10:15

Slightly better...
23:15
00:30
10:30

I'm already running into a construct validity issue here (where there is a gap between the measured construct and the reality it's supposed to represent). Both going to bed and getting up are often not continuous processes for me, and the data simplifies this away.
Last night I laid in bed for a while, still in my clothes, before thinking, "Alright, let's actually go to bed" and got back up to brush my teeth and stuff.
And this morning, I got out of bed still in my nightclothes, did some things, then went back in for a bit.
In both cases, the data only captures the final timestamp when I'm "fully" in bed / up.

"eqyo, why are you turning everything into a science rant" I know, I know, I'll stop, I see looking at the clock that I should've turned this thing off 9 minutes ago, anyway.

23:15
00:15
10:30

23:30
00:15
10:30

19:30
00:00
10:00

23:00
00:15
11:15

(Compared to how it often goes on weekends lately, this is quite good)

Quite a bit worse last night:
00:45
01:15
08:00
Still an improvement compared to one week ago, though

23:00
00:15
10:45

mon-tue:
00:00
00:30
10:30

tue-wed:
00:00
00:30
8:45

wed-thu:
00:00
00:15
10:30

and last night:
19:30
00:30
10:30

01:30 (ugh...)
01:30
11:00

sat-sun:
00:00
01:15
09:15

sun-mon:
01:00
01:00
12:15

and last night:
23:00
00:00
11:15
(One of my worst nights in a while, got almost no sleep)

23:30
00:30
10:30

wed-thu:
23:45
00:15
12:15

thu-fri:
19:30
00:45
11:00
(Another one of those nights with near-zero sleep)

and last night:
00:30
01:00
11:45

So last night was:
17:45
00:45
12:00

For the 5 days before that, I've got no data because I kind of went off the rails. Let's see, I worked through the night mon-tue (did lie down for a bit in the morning), the rest of them is all bedtimes around 2 or 3 o'clock, I believe.

fri-sat:
18:00
00:15
11:45

last night:
15:00
00:15
11:00

mon-tue:
00:00
00:30
10:30

last night, literally ONE DAY after I said on here "I'm not going to work into the night anymore, it's a tactical mistake":
03:00
03:00
09:30

wed-thu:
01:00
01:00
09:15

thu-fri:
19:15
00:30
10:30

fri-sat:
00:00
00:30
11:00

sat-sun:
20:00
03:00
12:00

and last night:
01:15
01:45
12:30

mon-tue:
23:15
00:30
11:00

last night:
23:30
00:15
11:15

23:15
01:00
12:30

00:15
01:00
10:45

fri-sat:
00:30
01:15
11:30

last night:
03:00
03:00
12:30

Well shit, here we go again, what the hell was I thinking...

01:15
02:00
11:45

00:00
01:15
11:45

tue-wed:
00:00
01:15
10:45 (I think)

last night:
23:30
00:15
10:45

Back in the 23s! Now only to maintain this for the rest of the summer and beyond...

Starting this again.

01:30
02:00
13:00

mon-tue:
03:
03:
13:30

last night:
03:
03:
14:00

Oof, that's not very good...

02:15
03:15
13:00

and again...
03:15
03:30
14:00

mon-tue:
03:15
03:30
07:30 (not slept)

tue-wed:
01:15
01:45
15:00

last night:
02:15
02:30
07:45 (not fucking slept AGAIN, this time because there were people in the building making noise at 05)

thu-fri:
18:45
00:45
13:00

fri-sat:
-

sat-sun:
02:15
02:15
08:00

sun-mon:
02:15
02:30
14:00

mon-tue:
00:30
01:30
12:30

tue-wed:
23:00
01:00
13:00

and last night:
01:15
01:45
14:00