Solutions month has 26 entries with similar clues

• 3-letter words
• decLast month (abbr.)
• aprMonth after Mar.
• 4-letter words
• julySummer month
• instthis month
• year12 months
• 5-letter words
• sixthLike June, among months
• lunarSort of month
• tebetHebrew month: var
• 6-letter words
• augustThe month that is named after Emperor Octavian
• yearlyEvery twelve months
• 7-letter words
• octoberOriginally the eighth month
• ramadanMuslim month of fasting
• monthlyPer month
• 8-letter words
• calendarTable of months and days
• decemberLast month
• novemberMonth in which US presidential elections are held
• 9-letter words
• offseasonFootball player's non-competitive months
• deceptionmonth involved poet in fraud
• quarterlyEvery three months
• 10-letter words
• instructorone teaching in this month runs after dodgy court
• per-mensemPer month
• pay-chequeThe important monthly piece of paper
• 11-letter words
• on-the-mendImproving? Need month working out
• 13-letter words
• premium-bondsGovernment securities that enter the holder for monthly cash prize draws
• 14-letter words
• cricket-seasonMonths of batting and bowling
• 15-letter words
• gestationperiodAbout 20 months, for elephants