Timing is one of those things that sounds like superstition until you actually pay attention to it for a few months. Then it stops sounding like superstition and just sounds like the obvious truth nobody bothered to write down. When you post, when you browse, and when you send that first message all matter, and they matter more than the content of the message itself in a lot of cases. I know that sounds crazy. It is still true.
Start with browsing. The best time to browse a city listing on Ladys One is not whenever you happen to have a spare fifteen minutes. It is when the freshest, most active listings are up. In most cities that is Sunday evening through Tuesday night, with a second spike on Thursday. Sunday because people had a weekend that either went great or went nowhere, and either way they are motivated. Tuesday because the workweek has settled in and the week ahead is being planned. Thursday because the coming weekend is on people's minds. Weekend afternoons are actually one of the worst browsing times because a lot of the best posters are out doing things.
For posting your own listing, the peak windows are similar but a little tighter. If you can post between about seven and ten pm local time on a Sunday, Monday, or Tuesday, you get the most eyes per hour it is up. A listing posted at nine in the morning on a Saturday will get buried by the time the browsing crowd shows up at seven pm and it will look days old before anyone notices it. Fresh sorts high. Aged out sinks. If you have not built the listing yet, this walkthrough is the one to open first.
Now for the message side. If you see a listing you like at eleven pm, do not send a message at eleven pm. That is the single most common timing mistake. Late night messages read differently than they would read in daylight, whether you meant them to or not. The reader wakes up in the morning, scrolls their notifications, and your carefully written thoughtful message is sitting there next to a bunch of two am nonsense from other people. Guilty by association. Save it as a draft and send it at ten in the morning. Same words, completely different frame.
The lunch hour, roughly eleven-thirty to one-thirty local time, is a sneaky-good window for outgoing messages. People are on their phones, they are between things, and they are not doing anything cognitively heavy. They will actually read what you sent. Compare that to seven pm when everyone is cooking or driving or wrangling kids or catching up on shows, and your message is one more thing being ignored. Nobody responds thoughtfully at seven pm. They respond thoughtfully at twelve fifteen. Once you notice this you cannot unsee it.
Weekends are their own thing. Saturday morning is genuinely underrated for message sends. People are up, unhurried, coffee in hand, actually willing to have a slower back-and-forth. Saturday night is the opposite and completely dead for anything real. If someone is out, they are out. If someone is home on a Saturday night, they may not want to be reminded of it by a stranger's message. Sunday morning is where a lot of momentum builds for the coming week, so a Sunday morning "hey, I read your listing, want to grab a drink Tuesday?" performs unreasonably well.
One more piece: response gaps tell you something. If somebody takes six hours to reply on a Wednesday, that is not a rejection, that is a job. If somebody takes six hours to reply on a Saturday, that is a signal. Not necessarily a bad signal, but a signal. Pay attention to the pattern over the first few exchanges. If it consistently takes them a full day to answer, you are not in their top five. That does not mean give up. It means calibrate expectations and keep other conversations going. If you want the etiquette side of all of this, the first message guide pairs well with the timing stuff here.
None of these are laws. They are patterns I have watched hold up across cities and years. Test them for yourself. Post a listing at eight pm Sunday and post one at ten am Saturday and see which one gets more messages. Send five messages at midnight and five at noon and see which set gets replies. The numbers will teach you faster than anything I could write. Once you know the rhythm of your city page, everything gets easier.