Humans are unusual in that females accept males for “recreational” sex even when they are not close to ovulation, whereas all other mammals only attract and allow males to mate with them during “heat” (“procreational” sex).
However a scientific article in Evolution and Human Behaviour (http://www.unm.edu/~gfmiller/cycle_effects_on_tips.pdf) has proven that lap dancers earn significantly more in tips around the time they ovulate (if they are not on the pill). This proves that ladies are unconsciously sexier when they have high oestrogen levels, similar to other mammals that display signs of heat. This is the optimum time to visit an escort!
Ladies like to keep their personal details private so are very unlikely to disclose when they are close to ovulation, but from observing certain patterns in their dates of advertising (e.g. work for 3 weeks then a week off), you can predict the best time. Also around the time of ovulation they will feel sexier, so are more likely to post more flirty / sexy comments on the boards, upload new sexy photos, send suggestive PM’ s to you, befriend you, get an increase in very positive reviews etc.
Ladies here may be in denial about this but it’s your basic mammalian instinct, so you can’t fight it (unless of course you are on the pill).
Anyway, I have been studying closely a few ladies here and reckon I have identified one who will be ovulating next week. Hopefully she will still be advertising in my locality and I can try to organise a meeting. Should be brilliant!!