keyword

21 days ago

Monthly search volume and cost-per-click data for "21 days ago" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=21+days+ago&country=us" +--------------+------------------+ | volume | 2,900 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-20 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
1 month and 21 days from now	3,600	$0	15/20
10 days ago	2,400	$0	15/20
21 days prior to today	880	$0	15/20
what was 21 days ago	590	$0	17/20
what day was 21 days ago	480	$0	15/20
what day was it 21 days ago	480	$0	15/20
what was the date 21 days ago	390	$0	16/20
when was 21 days ago	170	$0	16/20
how many days was 21 days ago	50	$0	17/20
how long was 21 days ago	40	$0	17/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=21+days+ago&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt